[Material and Size]:Made of sturdy metal and pp material,this reciprocating grinding machine measures 30*145mm in size,can be used for a long time [Quick Release]:The features a quick-release design that ensures the grinding head stays steady and does not wobble during use.This design also allows for faster replacement of the grinding head [Adjustable Speeds]:The MS148 offers two-speed settings for fast or slow grinding,with its reciprocating that makes your grinding tasks easier [Easy to Use]:With its a button start feature,this model tool is easy to operate and suitable for all your grinding needs [Function]:Multifunctional model polishing tool,great for all your DIY needs, Weight: 0.14 pounds, Manufacturer: KIXZSAZ