Shaft collar DIN703 bore 20mm 1.4305 set screw A2 inner hexagon SKU: 62399220 - Maedler North America
Climax Metal C-037-2H Set Screw Collar, With 2 Holes at 90 Degrees, Black Oxide Plating, 3/8" Bore Size, 3/4" OD, With 1/4-20 x 3/16 Set Screw: Setscrew Shaft Collars: Amazon.com: Industrial & Scientific
Climax 3/4 in. Bore T303 Stainless Steel Set Screw Collar C-075-S - The Home Depot