We offer 2 types of stainless steel shim kits. 
 
1. The keyed shims are only designed to fit the HT-HS500L long add on inducer. 
2. The round non keyed shim kits fit all standard pumps with or without standard shaft mount inducers
3. Our shim kits contain a stack of .010 (qty 4) and .020 (qty 5) shims that total .140 in shims.