Drilling Jig a perfect DIY tool kit, easy to use and operate. Oblique drilling jig, Precise drilling, smooth, does not destroy raw materials. Eccentric jig with detachable design can meet different drilling needs and is more powerful. Adjustable metal bushings are precisely aligned during drilling, making it easy to adjust the drilling height and hole depth. Dowel Guide fMade of 6061 aluminum alloy, the surface is anodized, wear-resistant and practical, with a long service life.