Bosch 6 Piece Auger Drill Bit Set $50.00 MADE in USA Bosch 6 Piece Molds are available in several colors, from black to gold. $45.00 I chose this set. There are different pieces of Bosch. Each piece offers specific functionality. Most Bosch pieces have a different basic set of buttons that control the thickness of the holes in the top and bottom of both pieces. Additionally, some pieces of Bosch do not contain any holes.