Stainless steel sheave Shim is 1/32" thick and is precision made by Kolstrand for the 20" Line Hauler and the Sea Catcher 3N-S purse winch
Shim is used to adjust the sheave halves by spacing the sheaves
Kolstrand 1/32 Inch Thick Stainless Steel Sheave Shim for 20 Inch Line Hauler and Sea Catcher 3N-S Purse Winch
Kolstrand Part No. AKP20-20SS-Shim_0.03125