Features: The pocket hole drill guide set is an amazing woodworking jig and an exceptionally handy tool collection. Drill guide is made of high quality aluminum alloy and anodizing finished for durability. Easy to use and install, suitable for joints wood boards of different thickness This set includes a set of self-tapper screws and plastic plugs for convenient use. This jig creates flush, corner and angle pocket hole joints for leg-and-rail connections, building face frame cabinets and fastening picture frames with unlimited applications. Specification: Material: die steel, aluminum alloy 6061 Main Color: Blue Drill Bit: 9.5mm(dia.) Package list: 1 x Pocket Hole Jig base 1 x 9.5mm Step Drilling Bit with Spacing Ring 1 set x Screwdriver bit 1 x hex wrench 2 x Adjustable Angle lock knob 2 x Gasket 2 x small black screw 1 set x screw and plug .