With the dual pinion drive system, the hand drill can be used smoothly and improve your work efficiency. Made of high quality steel with advanced technology, it has a long service life. The product quality is. The chuck of a hand drill is adjustable, which allows you to adapt drill bits of different sizes. Can meet your different needs. It is mainly used for disassembling clamped parts such as gears and sleeves and correcting the deformation of parts. Suitable for use on wood, bamboo, soft and thin metals, plastics, PVC, acrylic, fiberglass boards and circuit boards. Product specifications: 1/4 inch Drill clamping range: 0.6-6 mm (1/4 inch) Dimensions (including chuck): approx.: 1/4 inch: 30 x 8.2 x 7 cm Product features: 1. Made of 45# steel, the drill stand and crank are cast by precision silicon smelting process; 2. Thickened high-strength ABS engineering plastic handle, the handle is hollow and can store spare chucks; 3. Powder metallurgy process precision casting gears, high precision, quench hardening, wear resistance; 4. Double gear drive mechanism, flexible crank operation, not easy to get stuck; 5. It uses a key drill chuck common to ordinary hand drills, with high clamping accuracy, and the drill bit is not easy to break due to eccentricity; Scope of application: The product does not require any power supply, and the drilling speed and position are manually controlled. It is easier to control and safer than an electric drill, but it has low speed, low efficiency and low transmission torque. Not suitable for drilling harder metal materials, tiles, masonry, concrete, etc. Suitable for wood, bamboo, thin and soft sheet metal, copper, aluminum, plastic, PVC, acrylic, fiberglass board, circuit boards, etc. It is an ideal hand tool for carpenters, DIY enthusiasts, model enthusiasts, student hands-on experiments, teaching practices, etc. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.