What's the difference between a wood hole opener, a metal hole opener and a stainless steel hole opener

Literally, it is the material to be hit is different.

Then for these openings in the material required to design the hole opener raw materials are also different, specifically can be divided into:

Carbon steel hole opener: can only be used to play softwood and other relatively soft materials

Bimetal hole opener: the teeth of the Department of the relatively hard high-speed steel, can also meet the demand for hitting the wood and hitting the metal

High-speed steel hole opener: the main Used for punching iron plate, ordinary steel plate, aluminum plate and other ordinary metal plates

Carbide hole opener: the teeth are inlaid tungsten-carbon alloy, very high hardness, mainly used for punching holes in stainless steel plate as well as high hardness steel plate.

I hope the above introduction is useful to you.