The TX-2234 24 Piece Star Wrench Set includes 4 Star Wrenches: 6 x 8-10 x 12-14 x 18-20 x 24 7 x 3/8" E-Star Sockets: E10, E11, E12, E14, E16, E18, E20; 10 Star Bits: T8, T10, T15, T20, T25, T27, T30, T40, T45, T50 all in 30 mm length; 3 Bit Holders: ¼" Dr. x ¼"; 3/8" Dr. x ¼"; 3/8" Dr. x 5/16".