4Pcs 0840UU 8mm Groove Guide Pulley Sealed Rail Ball Bearing 8x40x20.7mm by Farmunion

Description

U type pulley, the internal bearing fine bearing steel. Strong bearing capacity, flexible rotation, internal upgrade stainless steel bearings,can be used in the wet environment, not rust. Package include: 4Pcs 0840UU 8mm Groove Guide Pulley Sealed Rail Ball Bearing