This well-built fixture lets you take the convenience, accuracy and repeatability of a drill press wherever your electric or cordless drill can go. Just tighten your drill's 3/8" chuck on the guide's 3/8" drive spindle and install a bit in the jig's own 3/8" Jacobs chuck. An adjustable depth stop permits production drilling for shelf pins or other repetitive jobs; return springs keep the drill up and out of the way between operations. V-notches in the base hold dowels and other cylindrical objects for accurate center drilling. Set guide rods for perpendicular or angled drilling. Maximum drill depth is about 6". The guide handles virtually any 3/8" drill with motor housing up to 3-1/2" wide. Wolfcraft model # 4525.