Usage Tips:With three guide hole size: 3/16, 1/4, 5/16, 3/8 Inch; 30 45 90 degree drilling angle Made of High-quality materials, CNC machined with anodized finish, solid construction; Stainless steel drill bushings will not rusted and wear out very quickly Detachable drill bushings, remove it when you need a larger flat surface for clamping; And it can be replaced with the bushing size you want The drill guide features an positioning bar function to help you quickly make repeatable bores; In the middle features a self centering V-groove for accurate drilling on square stock edge and round stock surface Simple intuitive design, can be used for strong timber framing joints using dowels or pegs, like stair railing, cable railings; This tools makes outdoor structures easier to build Material: Metal colour: red Package Contents: 1 x Drill Guide Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.