Specification: being is 54 mm, 51 mm and 38 mm, 32 mm

Nurture shank diameter (triangles) : 6 mm

A bit being specifications: 6 mm

Do things bit length: 78 mm

Do product configuration: 4 hole saw, only 32,38,51,54 mm, 1 is only 9.5 mm bearing with 6 mm drill bit, 1 only 2.5 mm Allen wrench

Product features:

Using of 55 # steel manufacturing, sawtooth high frequency quenching, long service life

Openings for tooth after can adjust, can be used multiple times, USES the high quality steel seiko, can be used for carpentry and PVC, etc., mainly used in home outfit to shoot the light special, cannot be used for metal and stone, after using in the openings for the surface coating of a small amount of anti-rust oil to avoid natural oxidation.