Description: 【quality material】: this electric nail file machine is made of quality alloy and plastic materials, which are wear resistant, sturdy, and lightweight. it can be used repeatedly for a long time 【adjustable design】: the speed of this portable nail machine is adjustable according to your needs. it also allows easy adjustment of forward or rear rotation for flexible usage 【easy to use】: the handle of this nails polishing tool has an ergonomic design that is easy to grip and stable in hand. it features ventilation holes for comfortable use 【suitable size】: the handle of this nail file machine measures 18 cm in length and 2.5 cm in width; the machine itself measures 17.2 cm in length and 6.5 cm in width, making it compact and portable 【wide application】: this professional nail grinder tool is nice for nail polishing, trimming, etc., meet all your DIY manicure Specification: Material: Alloy and Plastic Size Chart: Handle Size: 18cmx2.5cm/7.09inchx0.98inch Machine Box Size: 17.2cmx6.5cm/6.77inchx2.56inch Package Includes: 1 Electric Nail File Machine, 1 Instruction Manual, 3 USB Cables, 5 Grinding Heads, 1 Handle Note: Please allow slightly errors 1-2cm differences due to manual measurement.