Feature●6061-T6 ALUMINIUM: The belt grinder wheel is made of durable aluminium material. This wheel is torsion-resistant, rust-proof and corrosion-resistant for long-term use. Durable and stable and ensures smooth work.●3 inch tracking wheel and 2 inch idle wheel: the 3 inch (75 mm) tracking wheel has a diameter of 3 inches (75 mm) and a width of 2.4 inches (61 mm). 3 x heavy-duty 1/2 inch (12 mm) bearings mounted back to back in each wheel to ensure maximum bearing life. There is a spacer between the bearings to avoid over-tightening.●FLEXIBLE APPLICATIONS The belt grinder wheel set can satisfy your needs and works great when grinding metals, wood, acrylic and other materials. Widely used in parts factories, building materials factories, etc., perfect for tool polishing.●4 inch drive wheel: drive wheel is CNC machined with a 0.75 inch / 19 mm bore. The bore is equipped with a 0.24 inch / 6 mm keyway. The wheel is 2.4 inches / 61 mm wide. The surface is really crowned to ensure that the strap does not jump off the wheel.●EASY INSTALLATION This grinder belt grinder set is easy to carry and use with small and lightweight features. The 1/2 inch (12 mm) bearings can be easily replaced when worn. Stalling this wheel on machines is not fatigue.Descriptionclass="celwidget" data-feature-name="aplus" data-csa-c-type="widget" data-csa-c-content-id="aplus" data-csa-c-slot-id="aplus_feature_div" data-csa-c-asin="" data-csa-c-is-in-initial-active-row="false" data-csa-c-id="yea1cm-uq0x27-b1i9i2-kf14b" data-cel-widget="aplus_feature_div">