HARDELL 508PCS Rotary Tool Accessories Kit for Sanding Cutting Polishing

The socket base is made of heat treated Chrome-Vanadium Steel, and the bit is made of S2 Alloy Steel. Which for professional and durability. | Set Includes: 20PCS 3/8"Dr. Hex Bit Socket Set (5.9-inch Length): 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 3/8", 7/16"; 3mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 12mm; 12PCS 3/8"Dr. Torx Star Bit Socket Set (5.9-inch Length): T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, T55, T60 | The Extra-long design allows bit to reach deep into tight space. | High contrast and specific size marking for identification. It helps you select the size easier. | It comes with a sturdy and convenient storage case. Keep each piece in the proper position. All EMENTOL products meet or exceed ANSI performance standards.