Farm-Ag OTR Wheel Maintenace Kit 4-1/2" Stud Kleen Disc Standard size disc for 4.5” grinder. Not your standard material. Product info Rust Erasers Reach those tighter spaces and clean them faster. Product Info Metal Wire Wheels When all else fails, metal shall prevail. Product Info 3" Stud Kleen Disc R-Lock discs for a more controlled cleaning. Product Info Nut Brush Clean the internal threads of lug-nuts. Product Info