Check the listing for details. GRAINGER APPROVED 40TP66 Plastic Strapping,Machine Strapping,1/2" 40TP66. Condition: New. Listed at 121.66 USD. Plastic Strapping, Strapping Application Standard Duty, Strapping Grade Machine Strapping, Strapping Width 1/2 in, Thickness 0.03 in, Break Strength 600 lb, Overall Length 6,000 ft, Core Diameter 16 in, Core Width 6 in, Strapping Finish Embossed, Color Black Machine-grade polypropylene strapping is applied using a strapping machine and does not require seals. Strapping machines are used in moderate-to-high volume applications. Polypropylene strapping is a lightweight strap used to bundle newspapers, seal and bundle cartons, and secure light loads.Polypropylene strapping bands, sometimes called poly strapping, are a lightweight strap used to bundle newspapers, seal and bundle cartons, secure light loads, and for other light-duty applications. The embossed surface makes the strapping flexibl.