Powertool Accessories

Chuck capacity:3-16mm Connection size:1/2″-20UNF With 1pcs chuck key Packed by colour box

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).