It is a DIY Tool/Drill Hole Tool/Reversible Ratchet Hand Drill Tool, Material: 45# Steel, Handle: Premium Plastic, Chuck: 2 Jaws, Clamping Range: 4~12mm, Overall Size: 333mm x 140mm/13.1”x5.5”. Application: Mainly used for wood drilling, plastic, acrylic, PVC, circuit board, glass fiber, etc.