The TSO Power-Loc Bench Connector Dog is a 20mm diameter clamping device designed for use on multifunction workbenches, Festool MFT and Parf/ UJK workstations. These Bench Connector Dogs are compatible with most grid tables with chamfered 20mm holes. They function as a unique and secure method of attaching an extension to a your grid worktop or adding a jig, fixture or other accessory mounted on a board. The Power-Loc Bench Connector Dog locks two boards together quickly, safely and very securely. The Power-Loc Dog uses an offset cam and integrated locking lug design. They provide precision registration and alignment and apply strong clamping pressure. The design eliminates the need to use a separate clamp or locking knob from the underside of the worktop. The Power-Loc is tightened from the top with a 5mm hex driver making them ideal for those benches with no access to the underside. The chamfered lip means the Power-Loc Dog sits nicely flush with the work surface without taking up valuable space on your worktop. Precision made from 300 series stainless steel. They have a clamping range of 30mm (1-3/16") to 40mm (1-9/16"), weight: 92g.