It is a Drill Hole Tool/Reversible Ratchet Hand Drill Tool, Material: 45# Steel, Handle: Premium Wood, Clamping Range: 4~15mm(1/8-inch ~3 /10-inch), Overall Size: 40cm x 15cm/15.7”x5.9”. Application: Mainly used for wood drilling, plastic, acrylic, PVC, circuit board, glass fiber, etc.