The Performance W1178 9-Piece 3/8-inch Drive Star Bit Socket Set are professionally-crafted for strength and durability. Features: * Nine sizes of 3/8-inch drive star bits range from T-10 to T-50 * Hardened alloy steel bits * Professional sand finish * Bonus storage rail included What"s In The Box: * T-10 Star Bit Socket * T-15 Star Bit Socket * T20 Star Bit Socket * T-25 Star Bit Socket * T-27 Star Bit Socket * T-30 Star Bit Socket * T-40 Star Bit Socket * T-45 Star Bit Socket * T-50 Star Bit Socket * One Storage Rail