This T-bar driver set comes with 9 sockets and 11 bits and is made of chrome vanadium steel. The quarte-inch bits are secured in a plastic holder. It has a powerful magnetic chuck and includes (1) T-bar driver, (3) Philips bits #1, #2 and #3,(3) star bits t15, t20 and t30, (5) slotted bits 5|16, 1|4, 3|16, 5|32, and 1|8 and (9) sockets 3|16, 7|32 1|4, 5|16, 11|32, 3|8, 7|16, 15|32, and 1|2.