4pcs 0840UU U Type UGroove Pulley Roller Guide Wheel 8x39.5x20.1mm

1、Made of high quality material, these pulleys are durable, sturdy and wearable.2、Internal lubrication grease, smooth operation, good mute effect.3、U‑shape groove design, smooth surface reduces friction.4、There are total 4 pieces of pulleys in one set that you many use for many projects.5、Widely used in doors and windows to track and drive mechanical equipment.Features:Made of high quality material, these pulleys are durable, sturdy and wearable.Internal lubrication grease, smooth operation, good mute effect.U-shape groove design, smooth surface reduces friction.There are total 4 pieces of pulleys in one set that you many use for many projects.Widely used in doors and windows to track and drive mechanical equipment.Specifications:Model: 0840UUType: U-grooveMaterial: Metal, plasticColor: BlackInner Diameter: 8mm/0.3inOuter Diameter: 39.5mm/1.6inThickness: 20.1mm/0.8inQuantity: 4pcWeight: 109g(approx.)Package Includes:4 x Pulleys