Limited Edition Dewalt 100 Year Anniversary 100 Piece accessories set in a medium toughcase+ set. Includes Mixed screwdriver sets, Key wood drilling sizes and premium Black and Gold drill bits DEWALT Black Gold HSS Drill Bits have a speed tip and a tough core for increased durability. The bits also incorporate a no spin shank that eliminates the frustration of the bit spinning in the chuck. Supplied in a TOUGH CASE+, this is part of a connectable case system that is TSTAK™ compatible. Individual TOUGH CASES can be clipped together for easy transportation. Black Gold Drills for Metal and Multimaterial Drilling - Drills into wood, metal and plastic. This set comes in the Medium ToughCase® ready to fix to the top of your existing Tstak case/tough case system. The DEWALT .