Multifunction Overload Drill Glass

Triangular handle design makes the drill bit have firmer clamping without slipping, and
U-shaped spiral groove design makes drilling smoother, so this drill bit is pretty practical
and easy to use.
These drill bits are made of YG6X hard alloy, which is anticorrosion
and durable,high
hardness, strong toughness
This drill bit can used in ceramic punching, glass punching
and so on.