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This high quality, general purpose, precision Industrial Metal Double Ended Stub drill bit is best suited for intermediate skilled level users.

– Made of High Speed Steel
– Precision ground
– Split point to prevent bit wandering
– Specifically for use in thin metal sheets

SDS Plus drill bits have 4 grooves (2 open grooves, 2 closed). The reason that SDS Plus drill bits have 4 grooves is to support the extra torque that the SDS Plus drill provides. They have a 10mm shank which is inserted 40mm into the tool holder (chuck).