2 in 1 Dowel Jig: Comes with 1 Dowel Jig and 3 Drill guide. Self-centering pin fixture set, you can easily and quickly locate, the positioning foot is easy to align the hole, and you can quickly and accurately mark the center line on the wood. Easy to Use:Self center dowel jig kit is movable with screws,could adjust the distance according to different demands. Positioning foots is easy to drilling in alignment, can quickly and accurately mark center lines on wood Precise Measurement: The position of the feet can be adjusted according to the thickness of the board. rill guide is 6mm(1/4),8mm(5/16)10mm(3/8),Could scribe to draw 1/16 inch, 3/16 inch, 5/16 inch, 7/16 inch, 1/8 inch, 1/ 4 inch, 3/8 inch, 1/2 inch edge. High Quality Material:The two-in-one straight hole drilling locator is made of ABS engineering plastics, high hardness metal drill guides,clear offset marking scale. Multi-function and High Efficiency: There are inch scale marking functions on both sides of the puncher, which realizes the two-in-one drawing and punching. You can also use it as a self-centering positioning pin fixture for drilling, or as a center scribe for marking. Specification: Material: ABS plastic Limiter specifications: 6mm/0.24in, 8mm/0.31in, 10mm/0.39in Applicable sheet thickness: 46mm/1.81in, 76mm/2.99in, 106mm/4.17in (adjustable) Package included: 1 X Locator 3 X Limiter