Teflon Valve Stem Seal Install Tool Kit

8 piece kit designed to properly install 5/16", 8mm, 11/32", and 3/8" Teflon valve stem seals. Kit features hardened, bullet-nose sleeves and coaxial aluminum drivers that combine to make seal installing easy. The .010" wall bullet nose sleeve gently expands the seal, protecting it from damage when passing over the valve setem end and the lock groove. The coaxial fit between the sleeve and driver insures that the seal is driven squarely throughout the entire installation process, eliminating damage due to misalignment.