This 6 bit Roundover and Bead router bit set is a staple for any woodworking shop. Great for edging, beading and/or molding applications, the Yonico 13621, complete with 6 practical sizes is bound to come in handy all too often. Radius sizes are as follows: 1/8", 1/4", 5/16", 3/8", 7/16", 1/2". Shanks are 1/2". Note: All 6 bits feature 1/2" bearings. Included in this set is an extra 3/8" bearing and Allen wrench. You may use the 3/8" bearing to convert the cutting design of each bit from roundover to bead as needed. Enjoy!.