The 250-1UL Uni-Seal Ultra Stem is for 1/4″ (6mm) prepared injury sizes, as part of a two piece repair. The 250-1UL are packed 20 stems per box.
TECH Uni-Seal Ultra Stems feature a lead wire for quick easy installation in prepared tire injuries. Each stem is wrapped with TECH’s thick chemical cushion gum which permanently fills, seals, and vulcanizes to the tire. These stems must be used in conjunction with the appropriate repair unit on the inside of the tire.