It is a Hand Drill/Drill Hole Tool/Reversible Ratchet Tool with 2-Jaw, Material: 45# Steel, Handle: Premium Wood, Clamping Range: 4~12mm (1/8-inch ~ 7/16-inch), Overall Size: 40cm x 15cm/15.7” x 5.9”, Application: Mainly used for precision hole drilling upon most types of wood, PVC, acrylic , plastic, glass fiber, circuit board, etc.