Mounting shank SW 11, with M 16-outer thread for "Pioneer" universal hole saws. Comfortable quick-release fastener for quick changing of the center drill bit, without locking screw. No tool loss if the impact mechanism is switched on by mistake: The shortened mounting slots prevent the impact of drill in hammer drills with an SDS plus mounting, which prevents damage to the tool. For working with multi-purpose hole saws "Pioneer". Easily remove the drill core by unlocking the centering drill and by pulling the drill core out of the hole saw. The key surfaces enable an easy loosening of the adapter.
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