Use hinge as template by drilling directly through the holes. Spring-loaded sleeve has a chamfered tip to position centrally in hole. Replace worn drill bits by undoing hex head screw on side. Contents: Hinge Drill Bits; 7/64" x 87mm, 9/64" x 98mm, 11/64" x 98mm, 2.5mm hex key. 1/4" Hex shank. Model No. AK3HD
