Features: 1.This tool is the fastest, surest way to perfectly square nuts and saddles in seconds; Allows for fine adjustment in the height of nuts or saddles. Measures 6.5x2.48x1.77inch. 2.Aluminum and Steel contstrucion; Solves the tone trouble caused by poorly-shaped and thus poorly-fitted nuts and saddles 3.Wheels are very durable hardened steel bearings. The Nut and Saddle Sander holds the nut or saddle perfectly vertical while you roll it over sandpaper on a flat surface. Adjustment screws set the amount you want to remove, and in moments the piece is squared up and flat. 4.Adjustable Height sander for bone, plastic and composite nuts and saddles 5.Please note Sand paper, nuts, saddles and wood blocks are not included. Notice: Actual color vary from that of the image due to computer settings. Please allow minor deviations due to manual measurement. Package List: 1 x Saddle Sander