Adjustable drilling depth

Regolable drilling jig, for 6,8 and 10 mm drill bit, you'll need 2 m8x50 screw with hexagonal head and 2 m8 nuts for the regolable register, 1 m6 nut 1 m8 nut 1 m10 nut for the drilling guideYou can use like me the longer nut for the drilling guide, these 3 nuts has to be modified by cleaning with the proper drill all the internal thread.the glue the 3 nuts to the base with superglue, the 2 m8 nuts in the handle and the screw head in the counter platein the foto i only use 10 and 8 because if what i need for my job, but i added the 6mm guide too.The center of all the all always be aligned, be careful with the screw regulation, you can clamp it to your piece with a clamp to ensure it didnt'move while you drill