??CUSTORM SUPPORTS?If any blade set that you purchase fails to fit your machine, please contact customer service and we will reply within 24 hours, we will arrange free of charge or refund. ??Package list?: the package contains 2 sets T blade and 4 limit combs. ??EASY INSTALLATION?:Professional T blade easy to fit Andis #04710 #04521. ??Professional precision?: blade is made from a high-tech Steel material,Close-cutting T-blade, can be zero gapped,Carbon-steel for dependable, long-life blade that stays sharp; Standard Replacement Blades for professional use only. ??Fit model?: T-outliner replacement blades compatible with Andis T-outliner, Andis Gtx,Andis Blackouts, Andis T-outliner Cordless/corded and many other brands of trimmers. T Outliner Blades for Andis T Outliner, Andis GTX, T Outliner Replacement Blade Andis GTX Replacement Blade (Gold Steel T Blade + Gold Steel Blade) Gold+Steel