Bike Handlebar Bar Shim Stem Reducer Size Reducing Bushing Sleeve 25.4mm to 31.8mm Bar Bore Adapter Black - Walmart.com
Shaft Sleeve 1/4Inch(6.35mm) Shaft Motor to 11mm Bore Adapter for RV030 Worm Gear Speed Reduce: Amazon.com: Industrial & Scientific
TANKE Bike Handlebar Shim spacer 31.8-35mm Bar Bore Adapter MTB Road Bicycle Stem Reducing SleeveReducer Cycling Part Cover Case
these are shotgun adapters aka chamber reducers aka shotgun inserts and called by a few other names. they allow you to fire lower gauge (caliber) shotgun shells out of a larger bore gun. they are for use in break action type guns and won't (or shouldn't. i ...
Schrader Valve Stem Adapter, Large to Small Bore – AERO Specialties
Amazon.com: DEWHEL 5/8" x 3/4" x 3" Shaft Adapter Pulley Bore Reducer Sleeve Bushing Sheave & Key : Automotive
Gorilla profile reduction with round bore Ø30mm to 1"3/8-6Z 145mm 1x , 76,50 €
Arbor 30-25.4-22-20mm Circular Saw Blade Reduction Ring Bore Bush Washer Adapter | eBay
BU-100 High Precision Saw Blade Bore Reduction Bushing 1 Inch to 5/8
Schrader Valve Stem Adapter, Large to Small Bore – AERO Specialties
Fouriers Bike Handlebar Shim Convert 35mm 26mm 25.4mm to 31.8mm Stem Handle Bar Bore Adapter Reducer - AliExpress
Brennan 0403-05-05 0403-05-05 | ARG Industrial
Amana Tool BU-530 High Precision Saw Blade Bore Reduction Bushing Reducing Circular Saw Blade Arbor Adapter Ring 30mm to 25mm - Amazon.com