This is a box of 10 PN-5 Rema bias ply tire patch repair units. Rema Tip Top offers a wide selection of bias-ply (cross ply) repair units for applications on passenger, truck, OTR, agricultural and industrial bias-ply tires. Due to Rema's fully-integrated blue bonding layer, Rema Tip Top bias-ply repair units are suitable for use with all current vulcanizing systems. For best results, always select the corresponding Rema Tip Top stem insert unit, carbide cutter and Special Blue Cement (BL8-F or BL32-F) for a permanent, reliable repair.