PRODUCT DETAILS Click an item to expand and learn more Overview 25° Hook Flat Top (FT) GrindFor ripping soft or hardwood on gang rip wet or dry. Please pay attention to keyway: #GR1010: 2 round keyways 3/8" x 3/8" + 1 round keyway 1/2" x 1/2". #GR1212, #GR1214, #GR1414: 1 square keyway 3/8" x 3/8". #GR1416: 1 pin-hole 7/16" dia. on 5" bolt circle. Safety Guidelines for Saw Blades. Reviews Questions and Answers