A guide for squaring off the shoulders of your hidden tang blade. This guide is made from hardened D2 and has a carbide insert for use in a grinder/belt sander. dimensions: 3-5/8" x 3/4" x 7/16" for each plate. Carbide insert 2-5/16 x 1/4" x 1/8". Two 3/16 alignment pins and two Allen head bolts. Maximum blade width 2-9/32"