Wedge backbores consist of the upper regular or heavy weight segment and the lower shank. This item is the separate lower shank without the upper segment. Choose the size to match the upper backbore section, either S, M, ML, or L.
Special Order: Plus and Minus shanks are longer and shorter than standard shanks in 1/16 inch increments. These are designed to reduce (plus shanks) or increase (minus shanks) in 1/16th inch increments.