General description This 3/8 Inch (1.5mm-10mm) Hand Crank Manual Hand Drill features a double gear system and comes with 2 drill bits, making it ideal for various materials such as wood, plastic, and acrylic. Its sturdy construction ensures durability and a long service life. Technical specifications Chuck Accepted Drill Range: 3/8 inch (1.5 mm to 10 mm) Material: High-quality steel and high-strength ABS plastic Installation Easy installation of the chuck and bits through simple twisting and screwing actions Includes a cleverly designed chuck key for effortless bit changes Usage Suitable for drilling into wood, bamboo, soft and thin iron, copper, aluminum, plastic, PVC, acrylic, fiberglass board, and circuit boards Not suitable for hard metal materials, tiles, masonry, or concrete