DEWALT's security screwdriving set. 31 pieces. Includes nine (9) security star bits T8, T10, T15, T20, T25, T27, T30, T35, and T40; six (6) security hex bits 5/16 in, 3/32 in, 7/64 in, 1/8 in, 9/64 in, and 5/32 in; four (4) security hex - metric 2mm, 2.5 mm, 3 mm, and 4 mm; four (4) spanner bits 4, 6, 8, and 10; four (4) tri-wing 1, 2, 3,and 4; three (3) clutch type G 6, 8, and 10; one (1) bit tip holder