A failed slider doesn't have to mean a failed zipper. The Lifetime Extension Kit lets you replace the slider on a TIZIP MasterSeal 10 in place, bringing a drysuit, packraft, or dry bag back into service without cutting out and re-installing an entire zipper. The punch and assembly tool are included, so you don't need anything else to do the job. Before you order, check which slider is on your zipper. TIZIP builds the MasterSeal 10 with either a polymer or a metal slider, and the two are not interchangeable. This is the polymer version. If yours is metal, you'll want the metal slider kit instead. Against the cost of a replacement zipper plus the labour to install one, this is the difference between repairing gear and retiring it. Includes: 2x LEK Front Cover2x LEK Back Cover2x LEK Fixing Screw1x LEK Punch1x LEK Assembly Tool2x LEK Slider (Polymer) incl. Puller