1、The positioning rod can set the vertical distance between the hole and the edge of the plate. There are two distances to choose from, 75mm / 3in and 100mm / 4in. 2、The hinge jig allows you to drill cup holes for concealed cabinet door hinges, an it is durable in use, includes drills in different size for hinges hole. 3、Comes with a 35mm drill bit, the concealed hinge jig is suitable for 35mm hinges and also available with 26mm hinges. 4、Simple to use, no special tools needed. Make cabinet door installation easy! Easy to use, suitable for their own home operation, do not need professionals. 5、Made of high quality engineering plastic, this hinge hole drill guide is durable. This is a set of drill guide tool used for convenient hinge hole drilling.