TECH’s Uni-Seal Ultra Max one-piece repair units provide a simple, quick, and safe method to properly repair commercial truck tires, industrial and small OTR tires. Gray cushion gum on the cap to permanently bond the repair to the tire. Gray cushion gum on the rubber stem to permanently seal out moisture and contaminants. Lead wire for easy installation. Cross-weave fabric offers reinforcement for both radial and bias tires. Best used with TECH’s Vulcanizing Fluid, Security Coat and Bead Sealer.