General Tools & Instruments introduces the EZ Pro mortise and tenon jig (Model 870; patent pending). It comes completely assembled and ready to use right out of the box. Included is a quick-change guide-sleeve assembly and 1/4-in. up-cut spiral carbide bit to produce the widely used 1/4-in. mortise and tenon joint, as well as guide-sleeve assemblies for 3/8-in. and 1/2-in. joints.