1. No pilot hole required 2. The big drill has 3 side handles 3. Automatically support the hole when drilling 4. High-speed steel, sturdy and durable 5. Widely used to cut holes in various materials such as steel, wood, thin iron, aluminum alloy, insulating board, PVC board, etc. 6. Specifications: (1) 4-32mm (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32 mm) 10mm shank (2) 6-30mm (6,8,10,12,14,16,18,20,22,24,26,28,30mm) 10mm handle (3) 4-20mm (4,6,8,10,12,14,16,18,20 mm) 8mm handle (4) 4-12mm (4, 6, 8, 10, 12 mm) 6mm shank
Packing list: The 3-piece set contains: 4-12mm x 1 4-20mm x 1 4-32mm x 1
