W. L. Fuller 11/64 in. Taper Drill Bit is a professional-grade high-speed steel taper point drill designed for the TPS-Lock System. This drill bit features a 1/4” hex power shank and the unique advantage of Fuller’s TPS-Lock® System, which provides a secure, positive drive with a detachable shank for cost savings and convenience. The system ensures the drill won’t release until intentionally disassembled, backed by a lifetime against breakage. To engage the TPS-Lock® grip, align the flat on the shank with the set screw hole, tap the shank onto the drill, and tighten the set screw. To release, simply loosen and remove the hex socket set screw and tap the shank off the drill. This drill bit is sized at 11/64 inch and is compatible with the tapered drill and TPS-Lock shank components. Model Number: 20130171C