1/4” drive socket adapter. Includes: SAE 6-pt. sizes 5/16”, 3/8”, 7/16”, 1/2”, 9/16”, Metric 6-pt. sizes: 8 mm, 10 mm, 12 mm, 14 mm, Slotted bits sizes: 5/32” x 1/4”, 7/32” x 1/4”, 9/32” x 1/4”, Phillips bit sizes: #1, #2, #3, Hex bits sizes: 3/32”, 1/8”, 5/32”, 3/16”, 1/4”, 5/16”, Torx bits sizes: T20, T25, T30, T40, #2 and #3 Bit Squares, Slotted bits sizes: 5/16” x 5/16”, 3/8” x 5/16”, 3/8” x 5/16”, T45 5/16” Bit, Torx, T50 5/16” Bit, Torx. Includes storage case.