Wide Capacity Self Centering Doweling Jig, JoyTube Drilling Guide Positioner Woodworking Doweling Jig Tool Hole Self Centering Locator

The drill bushings adopt premium material, sturdy, durable, and corrosion resistant.

Capacity with aluminum frame holds work securely.Two permanent drill hole sizes 7/16" and 1/2" and two threaded drill holes - Removable bushing sizes are two each of 1/4", 5/16" and 3/8" Adjustable, it can clamp on different thickness of wood boards from 3/8" to 6." The positioning is more accurate than other doweling jigs, no offset or gaps are left.

Jig may not be parallel during use, and manual adjustment is required.