It is made from high-performance high-speed tool steel by all grinding manufacture process, its optimized end tooth geometry provides it with easy and fast cutting. 
Annular cutters, with unique geometry type and random-space tips, provide clearly cutting, fast feed rate, less vibration, smooth hole surface and long tool life, highly effective for drilling. 

They are better and quicker than twist drills. It can be used on all kinds of magnetic drilling machines.

• Premium M2 cobalt HSS construction for superior hardness and performance
• Reformulated aluminum additive withstands high temperature and provides durability
• Thin wall design enables faster cutting due to less material to be removed
• Dual alternating tooth geometry produces more aggressive cutting and ejects chips more quickly
• 3/4" shank with two weldon style flat 90 degree apart fit into a majority of magnetic drills
• Shank design: 3/4" weldon
• Cutting depth: 1"
• 1 PC 9/16" annular bit
• 1 PC 5/8" annular bit
• 1 PC 11/16" annular bit
• 1 PC 1316" annular bit
• 1 PC 15/16" annular bit
• 1 PC 1-1/16" annular bit 
• 1 PC pilot bit
• 1 PC storage plastic box

Widely used in drilling steel, copper, aluminium, stainless steel and plastic, in either plate or pipe form.