Self-centering jig for drilling chipboard under 5mm confirmation. The body is monolithic (the inserts are unchanged).There are two bearings in the insert, which increases the accuracy of drilling.The distance between the legs is 50 mm., Suitable for materials (wooden block, chipboard and others) up to 50 mm thick.The jig fits snugly and stably to the end face of the plate material.This jig can be drilled into the corner of the material.It has an ergonomic shape, a groove for chip exit is provided.Self-centering means that the conductor always sets the drilling point at the center of the material.