Features:  Non-slip ergonomic handle, more comfortable and convenient for using.  The bits are made of CR-V material with high hardness.  PP & TPR handle.  Flexible Shaft Extension - snake into hard to reach places.  60 mm Shaft Extension - doubles as a T-handle for extra torque.  1/4" Adapter - use this kit's 4 mm bits in standard 1/4" drivers.  In retail storage box,portable design.     Specification:  Bits material: CR-V;  Handle material: PP&TPR;  Gross weight: 362 g / 12.8 oz;  Case size: 20.5 x 9.5 x 2.5 cm;  Material: Aluminum, CR-V,PP, TPR.     Sizes:  Pentalobe sizes 2, 5, 6 (for iPhone, MacBook Air, MacBook Pro);  Flathead sizes 1, 1.5, 2, 2.5, 3, 3.5, 4 mm;  Phillips sizes 000, 00, 0, 1, 2;  JIS sizes 000, 00, 0, 1;  Torx sizes T3, T4, T5, T6;  Torx Security TR7, TR8, TR9, TR10, TR15, TR20 (compatible with non-security);  Hex sizes 0.7, 0.9, 1.3, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 6 mm;  Square sizes 0, 1, 2;  Tr-iangle size 3 mm;  Tri-wing sizes 0, 1;  Nut Driver sizes 2.5, 3, 3.5, 4, 5 mm.     Package included:  1 x 58 in 1 screwdriver set.