Check the listing for details. GRAINGER APPROVED 2CXL3 Plastic Strapping Kit,1/2" 2CXL3. Condition: New. Listed at 71.01 USD. Plastic Strapping Kit, Kit Includes Buckles, Strapping, Tensioner, Fits Strap Width 1/2 in, Thickness 0.018 in, Break Strength 300 lb, Strapping Length 3,000 ft, Strapping Wind Oscillated, For Core Dia. 4 in These kits include the strapping, tensioner, and buckles that strap and secure polypropylene strapping. Polypropylene strapping, sometimes called poly strapping, is a lightweight strap used to bundle newspapers, cartons, and secure light loads. Strapping is wrapped around a bundle and tightened with a tensioner tool. The ends of the strapping are wrapped around the buckle and tightened manually.Polypropylene strapping kits include a selection of items that work together to hold, store, transport, tension, and seal polypropylene strapping. Polypropylene strapping, sometimes called poly.