CMT-800.526.11 - 3 PCS TONGUE & GROOVE CABINETMAKING SETCMT Tongue and Groove Set includes a matched set that produce a 1 4 x 1 4 tongue. The feature of the CMT system that sets it apart from other tongue and groove sets is that the tongue is offset to one side of the joint. This system produces a stronger joint allowing for more drilling area when used in conjunction with the CMT Pocket Pro when employing face frame screws. When the Pocket Pro is set at the one inch setting the screw will bypass the