Bevel Gauge 15&deg;-120&deg; Clear Acrylic - Made in America Handy for quickly checking a blade's cutting angle Measures 15, 17.5, 20, 22.5, 25, 27.5, 30, 35, 32.5, 35, 45, 60, & 120 Acrylic construction won't harm cutting edges 1/4" hole to attach to a keychain or hang on peg board 3" Diameter, 1/8" thick