CGW Cut-Off Wheel provides excellent stock removal ratio and efficient for smooth finishing. CGW 4 1/2 OD x 1/4 Type 27 Flat cut-off wheel with arbor size of 5/8 -11 is made of alumina for durability. 24-Coarse grit wheel is used for working on flat grinding surfaces and is ideal to use with right angle grinder. - Arbor size: 5/8-11. - Diameter: 4 1/2 in. - Thickness: 1/4 in. - Abrasive material: Alumina. - Grit/Grade: 24 coarse. - Excellent ratio of stock removal/wheel loss. - For working on flat grinding surfaces. - Most efficient when used between 0 - 15 deg angle. - Used with right angle grinder. - Applicable materials: Metal and low-grade stainless steel. - Sold as 1 Each.