【WIDELY USED AND EASY TO USE】DUEBEL door hinge jig can be used on new door frame unlocking hole, replace fingerprint lock, door opening slot, door frame lock tongue groove, unlocking hole, open eccentric hole, replace the large lock body, etc. The door lock installation kit is easy to use. If you are new users, suggest you to practice on the old wooden door first. Mortising machine is a good time-saving item for DIY remodelers and contractors. There is an operation video for your reference. 【NEWLY UPGRADED STYLE】1.After adjusting the included angle distance, directly clamp the door to work less assembly time. 2.Increase the clamping foot area, it is not easy to loosen, and the operation is more stable. 3.A linkage bearing is added between the locating ring and the bearing seat for more accurate positioning. 【NEWLY UPGRADED STYLE】4.The 2 head fixing block and the sliding block hole on the bearing seat are equidistant to ensure smooth sliding. 5.There are 152 small steel balls inside the linear bearing. The slider moves more smoothly, zero jam, more accurate. 6.Fast and time-saving. Up and down length adjustment, press the button to adjust. The longest slot can be opened up to 240mm. 【3 CUTTER BITS: 18/22/24 MM】Our door hole drilling kit has 3 different hole cutters (Sizes: 18/22/24 mm) made of Tungsten Carbide (TC) steel, higher quality over high-speed steel. It firmly grips most any thickness wooden door. Applying vertical guides with height and depth stops, overrun cutting area will be avoided by using this tool set. 【EASY TO CARRY】The door lock jig is made mostly of steel, comes with a pair of leather gloves, woodworker chisel (18mm diameter), stainless steel ruler, and other accessories, total weight with case: 10.03 lb (4.55 kg). The mortise machine comes in a large blow molded case, easy to carry, convenient for travel. Case size: 40 * 22 *15 cm (15.74 * 8.66 * 5.90 inch)., Weight: 10.031032921 Pounds, Manufacturer: DUEBEL