Permits cooled air
Controls smoke and Sparks
Acts as an outlet of products of combustion
No function
Rectangular top surface
Round tapered end
Square hole
Bottom portion
Drawing out
Punching
Drifting
Jumping
Heavy block of cast steel
Heavy block of mild steel
Heavy block of high carbon steel
Light block of aluminium
Round tong
Side tong
Hollow tong
Pipe tong
