Multi-use: Self-centering dowel jig kit, a joinery system that combines marking and punching.It's not just a dowel jig, you can use it as a self-centering dowel jig for drilling holes, also can be used as a center scriber for markingAccurate measurement: the diameter of the drill bit is 6mm, 8mm, 10mm, you can draw a line of 0.6cm, 0.9cm, 0.9cm, 0.9cm, 0.9cm.3 cm, 1/2.5 cm.Durable, Accurate and Portable: The 2 in 1 straight hole finder is made of ABS engineering plastic.The drill ring and stop collar are made of alloy steel, durable and accurate in measurement.Adjustable: It can be moved by screws, and the distance can be adjusted according to different needs.Whether you are a professional carpenter or not, you should have this very useful tool.High efficiency: If direct drilling with a hand drill will cause the hole to deviate, using a hole locator can achieve a good drilling position.Right angle drilling, even for less experienced DIYers, great gift.