Specifications: Thickened high-strength ABS engineering plastic handle is hollow, which can store spare drill chucks. Powder metallurgy technology precision cast gears has high precision, hardened by quenching and dual gear drive mechanism ensure flexible hand operation and not easy to jam. The product does not require any power drive, and compared with electric drills, it is easier to control and safer, but the speed is low, the efficiency is low, and the transmission torque is small, thus, it is not suitable for drilling harder metal materials, ceramic tiles, masonry, and concrete, etc.; and suitable for wood, bamboo, soft thin iron sheet, copper, aluminum, plastic, PVC, acrylic, circuit board, etc. This product is an ideal necessary tool for woodworkers, DIY enthusiasts, model enthusiasts, students hands-on ability test, teaching practice, etc. Item Name: Manual Drill Material: Carbon Steel Drill Clamping Range: 1.5-10mm (3/8 Inch) Features: Durable, Manual Drilling Tool, Teaching Supplies Size: 31cm x 8.2cm x 7cm/12.20" x 3.23" x 2.76" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Manual Drill (Drill Bits Not Included)