Sunex 3641 3/8-Inch Drive Stubby Tamperproof Impact Star Bit Socket Set, 10-Piece Meet or exceeds ANSI specifications Stubby design is ideal for work in tight spaces Forged from high quality CR-MO alloy steel Includes compact clip rail packaging Sizes are: T10H (310TH) T15H (315TH) T20H (320TH) T25H (325TH) T27H (327TH) T30H (330TH) T40H (340TH) T45H (345TH) T47H (347TH) T50H (350TH)