Diameter 35mm or 40mm Steel Thickness 8mm Wire Rope Rollers\Pulleys\Wheels With U groove and bearing bore 5mm6mm8mm10mm 10pcs|steel roller wheels|wheel diameterwheel with bearing - AliExpress
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UNITED SALES Sealed Close-Tolerance Conveyor Roller Bearing, Steel, For Axle Size 5/8 in, 1.75 in Bearing OD - 22FA95|UGFH.625X1.750-2RS - Grainger
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Prime-Line 1-1/2 in. Capitol Stainless Steel Ball Bearing Sliding Door Roller (2-Pack)-D 1694 - The Home Depot