【Router Bits 1/4 Shank】: 3 pcs rabbet router bits set with a 1/4" shank. Each bit has 3 different cutting heights: 1/4", 3/8", and 1/2", comes with 6 interchangeable bearings for various depths of cut 1/2", 7/16", 3/8", 5/16", 1/4", 3/16", 1/8", 1/16".