United Abrasives-SAIT 22264 Type 27 4-1/2-Inch by 1/8-Inch by 7/8-Inch Specialty Pipeline Cutting/Grinding Wheels, 25 Pack Zipper closure 2-Inch reflective striping for increased visibility or night work Highly visible polyester mesh maintains brightness after 25 washings Green solid Meets the ansi/isea requirements