ThunderBit Drills 1/2" Reduced Shank 3-Flats HSS Black & Bronze Oxide 47/64 1 2 drive ratchet set The PLUS-LOK™ SDS Plus extension

The PLUS-LOK™ SDS Plus extension connection mechanism has a small profile to drill deep through holes with drill bits 7/8" and larger

Slide-Switch Grinder that maintains constant speed under load

hex shank with power groove can fit into the extension

The double ended core driver reverses in the tool body

finished metals

ThunderBit Drills 1/2" Reduced Shank 3-Flats HSS Black & Bronze Oxide 47/64 1 2 drive ratchet set The PLUS-LOK™ SDS Plus extensionThunderbit S&D drills offer superior performance over standard HSS drills. All drills have a 1 2" shank, and are 6" overall length. Their heavy duty construction increases tool life and performance. 118 Split Point reduces walking at the drill point.