Bosch HC2309 9-Piece SDS-plus Bulldog Anchor Drive Installation Kit Installation kit Includes both bits and sockets 5/32 In. x 6-1/2 In. and 3/16 In. x 6-1/2 In. hex bits, #2 and #3 Phillips power bits, 5-3/4 In. sleeve, 1/4 In. and 5/16 In. sockets Concrete anchoring 1/4 In. hex shoulder for drive sleeve used to set masonry screws