Tiger® Zirc Cutting Wheel, 4 1 2 in dia, 0.045 in Thick, 7 8 in Arbor, Zirconia Alumina, Type 1, Z60T no checkout One piece Y shaped body design One piece Y shaped body design with magnetic legs Built in dial with 2 1 2° increments that turns 360° Hardened center punch marks set position by taping with a hammer Used to establish and mark a centerline at any angle around circumference on a pipe or tank or as a protractor level Excessive heat can damage magnets The depressed center design allows the flange lock nut to recess within the wheel so that it can be used for various grinding and cutting applications 045 in Tool Shape Type 1 Type High Performance Cutting Wheel Used With Right Angle Grinder Up to the task for the most demanding jobs