These cutters are also known as Annular cutters (Core Drills or Broaching Cutters)
JEI Solutions Turbo Endurance magnetic drill bit cutter with 25mm Cutting depth.
With their unique centerfree design, JEI Solutions Turbo Steel HSS-Cobolt cutters cut only the periphery of the hole, ejecting the remaining center as a slug.
These cutters produce reamed quality, burr-free holes in one operation, eliminating costly pilot holes and step drilling. JEI HSS-Cobolt cutters reduce torque and horsepower requirements by only cutting the periphery of the hole using the proper tooth geometry.
Used in conjunction with 1/4" short Pilot ejector pin .
Drill holes 3 times faster than twist drills. Drill unique and curved surfaces. Allow overlap cuts on existing holes. Produce reamed quality burr-free holes. Coolant fed cutting edges. Produces solid slug. Reduce machine size and horsepower requirements. Manufactured with C.N.C. accuracy. Resharpenable cutting edges. Eliminate time consuming, costly pilot holes and step drilling.
With universal shank 19.0mm internal bore 6.35 mm Steel quality : special quality high speed steel with cobalt Ground section : high performance toothing with pre and post cutter