| Chalk Line Reels | Marking Tools | Legendary Giant™ chalk reels manufactured in Aurora - the industry gold standard for 50+ years. Models K3X and K3XPRO feature 100-foot premium braided lines (3X stronger than competitors), precision-machined 6:1 gear ratios for 3X faster rewind, patented StayFull™ ports for mess-free filling, and die-cast aluminum housings that survive 20-foot drops. Holds 12 ounces of chalk (2X standard capacity), sliding door prevents spills, and ergonomic crank handles with steel hooks. Built for harsh construction environments with sealed bearings and lifetime gear warranties. | https://www.keson.com/product-category/chalk-line-reels/ |
| Marking Chalk | Marking Tools | The world's finest marking chalk, Made in USA - the only marking chalk still manufactured in America. ProChalk formulation offers five permanence levels from temporary to permanent, with ultra-fine particles for crisp, bold lines that won't fade or blow away. Engineered with optimal flow rates to prevent clogging, water-resistant formulas for wet conditions, and high-visibility colors including Glo-Orange and Arctic Blue. Professional contractors worldwide choose Keson chalk for its unmatched line quality, coverage (up to 5,000 feet per fill), and consistency in all weather conditions. | https://www.keson.com/product-category/chalk/ |
| Mason Twine | Marking Tools | Professional-grade twisted and braided mason lines engineered for precise layout work. Available in #18 nylon (tensile strength 105 lbs) and polyester blends resistant to stretching, moisture, and UV degradation. Bright fluorescent colors for maximum visibility, pre-stretched to eliminate sagging, and treated for tangle-free dispensing. Wound on convenient reels from 250 to 1,000 feet, these lines maintain tension in wind and won't rot or mildew. Essential for foundation layout, bricklaying, and grade establishment. | https://www.keson.com/product-category/twine/ |
| Marking Paint | Marking Tools | ULTRA-MARK™ inverted marking paint - the professional's choice for utility marking and construction layout. Superior coverage formula covers up to 800 linear feet per can, water-based VOC-compliant formula safe for all surfaces, and patented spray-through cap technology for continuous marking without clogging. Fluorescent pigments provide maximum visibility lasting 6+ months, penetrates grass and gravel for permanent marks, and works in temperatures from 20°F to 120°F. APWA color-coded options meet all utility marking standards. Non-toxic when dry, lead-free formulation. | https://www.keson.com/product-category/paint/ |
| Specialty Marking | Marking Tools | Specialized marking tools for demanding applications including ProChalk™ hard lumber crayons that mark on wet, frozen, or oily surfaces. Clay-based formulation won't melt in 150°F heat, hexagonal shape prevents rolling, and available in fluorescent colors visible on dark lumber. Also includes layout markers, carpenter pencils with 4H graphite cores, soapstone holders for metal marking, and keel holders for permanent concrete marking. Each tool engineered for specific trade requirements and backed by Keson's lifetime quality guarantee. | https://www.keson.com/product-category/specialty-marking/ |
| Caution Tape | Marking Tools | Premium barricade and flagging tape engineered for maximum visibility and durability. Available in 2-mil to 6-mil thickness with superior tear resistance, weatherproof polyethylene construction that won't fade or deteriorate, and bold printed warnings that remain legible after months of exposure. Glo-colors provide enhanced visibility in low light, 1,000+ foot rolls for large job sites, and meets OSHA/ANSI standards for safety marking. Non-adhesive for easy repositioning, biodegradable options available. | https://www.keson.com/product-category/flagging-and-barricade-tape/ |
| Construction Flags | Marking Tools | Heavy-duty marking flags built to withstand extreme job site conditions. Features 21-inch steel wire stakes (30% thicker than standard) with sharp points for easy ground penetration, 4"x5" PVC flags that won't tear or fade, and APWA color coding for utility identification. Weather-resistant materials maintain color for 2+ years, bundle packaging of 100 flags for contractor convenience, and specialized options including printed messages and custom logos. Essential for utility location, survey marking, and excavation boundaries. | https://www.keson.com/product-category/flags/ |
| Construction Levels | Measuring Tools | Premium construction levels through exclusive SOLA partnership, featuring revolutionary FOCUS vials with 60% magnification for unmatched readability. European-engineered aluminum profiles with reinforced ribbing, shock-absorbing end caps, and lifetime vial warranty. Accuracy certified to 0.0005"/inch (0.5mm/m), temperature-compensated vials, and patented red ring technology. From 2-foot to 6-foot models, these represent the pinnacle of leveling technology for demanding professionals. | https://www.keson.com/product-category/levels/ |
| Measuring Wheels | Measuring Tools | World-class professional measuring wheels engineered for ultimate durability and precision. The legendary RoadRunner series features aircraft-grade aluminum frames, industrial Kesonite™ wheels that maintain accuracy on any surface, and precision-sealed counters measuring up to 100,000 feet. Telescoping handles with comfort grips, center-line design for superior balance, and lifetime gear mechanisms make these the most trusted measuring wheels in construction and surveying worldwide. | https://www.keson.com/product-category/measuring-wheels/ |
| Long Tape Measures | Measuring Tools | Industry-leading long tape measures built for extreme conditions and absolute accuracy. Available in fiberglass (pioneered by Keson founder) and steel with lengths from 50 to 500 feet. Features include dual-material open reel cases with superior impact resistance, high-visibility yellow blades with dual graduation markings, reinforced blade ends with heavy-duty rings, and ergonomic winding handles with 3:1 gear ratios. Blades tested to 200-pound pull strength, UV-resistant coatings, and temperature-stable materials ensure lifetime reliability. | https://www.keson.com/product-category/long-tapes/ |
| Short Tape Measures | Measuring Tools | Premium pocket tape measures engineered for professionals who demand excellence. Features include chrome-plated steel cases with rubber overmolds for impact protection, Nylon-coated blades for 10x longer life than standard tapes, true zero hooks with magnetic tips, and fractional markings for easy reading. Available in 16' to 35' lengths with standout reaching 11+ feet. Auto-lock mechanisms, belt clips with architectural scales, and limited lifetime warranties make these the contractor's first choice. | https://www.keson.com/product-category/short-tape-measures/ |
| Specialty Measuring | Measuring Tools | Precision specialty measuring instruments for unique professional applications. Includes hardwood folding rules with brass-plated joints guaranteed for life, engineer's scales with laser-etched graduations, pocket telescoping rods extending to 25 feet for grade checking, and digital measuring devices with Bluetooth connectivity. Depth gauges feature stainless steel construction with inch/metric scales, magnetic bases for hands-free use, and accuracy to 0.001". Each tool represents best-in-class quality for specialized trades. | https://www.keson.com/product-category/specialty-measuring/ |