Features: 1.Typically used after shaping a saddle or nut to final shape. Effectively solve the tone problem caused by poor assembly for the incorrect shape of the nut and the saddle. 2.This tool is the fastest, surest way to perfectly square nuts and saddles in seconds and allows for fine adjustment in the height of nuts or saddles. 3.Adjustment screws set the amount you want to remove, and in moments the piece is squared up and truly flat, more convenient to use. 4.The sander holds the nut or saddle perfectly vertical while you roll it over sandpaper on a flat surface. Suitable for bone, plastic and composite nuts and saddles. 5.The tool body is made of high quality aluminum alloy with high strength, sturdiness and durability, and is not easy to damage. Wheels are very durable hardened steel bearings. specification:Item Type: Nut Sander Material: Aluminum Alloy Body + Steel Wheel PackageList:1 x Nut Sander