Grinding Wheel 5" 100 Grits Aluminum Oxide Cup Abrasive Wheel, White Corundum Tooth Lock Washers Outer Diameter: (Wheel Bore Size)

Outer Diameter: (Wheel Bore Size) 108mm/4

Flange hex head has the same characteristic as external hex with washer

these colors also can make your bobbin thread vivid and colorful

24 AA Battery Box Size: 106mm x 91mm x 32mm / 4

Grinding Wheel 5" 100 Grits Aluminum Oxide Cup Abrasive Wheel, White Corundum Tooth Lock Washers Outer Diameter: (Wheel Bore Size)1. High hardness, sharp edges, and corners, good cutting performance, machining accuracy, and low grinding heat. It is a good tool for grinding. 2. The grinding wheel has high accuracy, high efficiency, and good roughness, resulting in less abrasive consumption and long service life. 3. Corundum has small particle size, impact resistance, and uniform particles. 4. Suitable for grinding hard and heat sensitive steel, such as hardened steel, high carbon