New!! DIY by ZZ® Adjustable .1-3.2inch (4-83mm) Diamond Hole Saw Bit Guide w/ Suction Cup Base
This guide is suitable for diameters up to 4.5 inches and should be used with wet diamond drill bits. The suction cup is designed for glass and tiles even in small sizes and it is easy to attach to a cooling systems.
In order to change to a larger drill bit: loosen the 2 screws and turn the V-Notch piece to 180° and then tighten the screws for usage.
It can be expanded from 18mm-22mm and 18mm to 75mm
1 x Adjustable .1-3.2inch (4-83mm) Hole Saw Guide (DOES NOT INCLUDE DRILL BITS)