Its wide range of applications allows it to meet various work requirements. The ergonomic design provides a comfortable and secure grip. The compact size and lightweight make it easy to carry and store. The included wrench enables easier installation. Made from copper and hard alloy materials, it is durable and long-lasting. This product measures 13.1cm in length, 2.4cm in width, and 2.4cm in height. Suitable for drilling common-density plastics and wood, such as model airplanes, car models, bamboo boards, ice cream sticks, chopsticks, bird cages, animal tooth bones, shells, PCB circuit boards, booklets, resin toys, drop film accessories, pearls, acrylic, and crystal materials up to 8 mm in thickness. Compatible with most USB power adapters that provide a 2A output. Item Name: Micro Grinding Machine Material: Copper, Hard Alloy Plug Type: USB Rated Power: 15W Rated Speed: 12000 rpm Power Supply Voltage: 5V No-load Speed: 11000 rpm Drill Bit Specifications: 0.8mm, 1mm, 1.2mm Features: Multi-purpose, Comfortable Grip, Non-slip Chuck Specifications: 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm Size Details: Grinding Machine: 13.1cm x 2.4cm x 2.4cm / 5.16" x 0.94" x 0.94" (Approx.) Chuck Length: 1.65cm / 0.65" (Approx.) Bit Length: 3.1cm / 1.22" (Approx.), 3.8cm / 1.5" (Approx.) Notes: Due to differences in lighting and screen settings, the item color may vary slightly from the images. Please allow slight variations in dimensions due to manual measurement. Package Includes: 1 x Micro Grinding Machine 1 x Drill Clamp 5 x Chucks 1 x Wrench 3 x Drill Bits 1 x USB Cable