Proper Size for Biscuit Joining B3 Bearing supplied. BB501 - Bearing kit with wrench (see pg. 35). Increase the versatility of your Rabbeting Bits by simply changing the bearing size to vary your cutting depth. This set allows 1/4", 5/16", 3/8", & 7/16" cutting depth on all 1-1/4" bits or 3/8", 7/16", 1/2", & 9/16" cutting depth on all 1-1/2" bits.
