United Abrasives-SAIT 20933 Type 27 4-1/2-Inch by .090-Inch by 5/8-11-Inch Tech High Performance Cutting Wheels, 10-Pack Zipper closure Lightweight, highly visible polyester maintains brightness after 25 washings 2-Inch reflective striping for increased visibility or night work Two upper and two lower pockets Meets the ansi/isea requirements