Features:
1) HSS annular cutter, with unique types geometry and
random-space tips provide clearly cutting, fast feed rate, less vibration,
smooth hole surface and long tool life, the effective of drilling is much
better and quicker than the common drills.

2)HSS annular cutter has the advantage of being durable and super tough, due to the fine, 
well-distributed and micro carbide structure. A long life tool
3) HSS annular cutter can be used on all kinds of magdrills like Nitto, Hougen, Jancy, Alfra, Ruko; as well as drilling machine and electric drill in rotary mode and all kinds of drilling
presses with all types of shank.
4) The cutters diameters is 20mm-100mm. The cutting depth is 25/50/75/100mm.