The mini socket wrench and bit box set includes a total of 38 pieces. The mini socket wrench and bit box set is sized at 1/4". This unique combination of a bit box and mini socket wrench set complements any workshop. The tools are neatly organized in the box for quick access. The sockets are designed for a variety of applications. The color-coded bits feature different colors to help distinguish between them. All parts are of Plus quality and come in a convenient plastic box. Additionally, you can look forward to a 1/4" x 1/4" adapter when you purchase this set. Key details include: 10 sockets (5.5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 mm), 2 extensions (50 + 100 mm), 1 1/4" ratchet with 48 teeth, 1 1/4" universal joint, 1 socket handle, 1 adapter (ratchet) 1/4" x 1/4" (bit), 2 slotted bits (red) 4.5 - 6.5 mm, 4 Phillips bits (dark red) PH1 - 2 - 2 - 3, 4 Pozidriv bits (blue) PZ1 - 2 - 2 - 3, 7 TORX bits with drill (purple) TX10 - 15 - 20 - 25 - 27 - 30 - 40, 4 hex keys (orange) 3 - 4 - 5 - 6 mm, and 1 adapter 1/4" x 1/4".