Our self centering doweling jig is precisely machined from aluminum alloy + steel, fast and firm clamping to improve drilling efficiency. Maximum thickness of wood board that can be accommodated: 10-170mm, hole angle: 90°. It is the best choice if you focus on product quality and experience.

Specifications:

Tools Size: 120mm x 65mm / 4.7" x 2.5"(L x W)
Acceptable wood thickness: 10mm-170mm / 0.4"-6.7"
5 Pcs standard drill size: 1/4", 3/8", 5/16", 7/16", and 1/2"
Bushings size: 2 x 1/4", 2 x 3/8", 2 x 5/16"
Drill bit size: 1 x 1/4", 1 x 3/8", 1 x 5/16"
Material: Aluminum Alloy

Distances Adjustment Instructions:

1: Unscrew the two left screws with the hexagon socket.
2: Adjust the large screw on the middle rod to make the left and right distance of the product consistent.
3: After the left and right distances are the same, tighten the left two socket head cap screws.
4: Rotate the small rotating rod, and check whether the left and right distances are uniform in the experiment.

Package Includes:
1 x Doweling Jig
6 x Bushings
3 x Drill bits
3 x Stop collars
3 x Hex keys

TIPS:
1:The drill sleeve is used to avoid the damage to the inner wall of the drilled hole caused by the friction of the drill bit. The inner wall of the 7/16" & 1/2" drilling holes is smooth, no need to use a drill sleeve, and you can drill directly with a drill bit. Beginners can also get started quickly.
2:After repeated use, if there is a small deviation, you can refer to the error adjustment method described below to make appropriate adjustments.