CompatibilityThis part is compatible with the following machines:DeWALTDWE4517 Type 3 7" 8,500 rpm 4HP Angle GrinderDWE4519 Type 4 9" 6,500 rpm 4HP Angle GrinderDWE4557 Type 1 7" 8,500 rpm 4.7 HP Angle GrinderDWE4559CN Type 1 9" 6,500 rpm 4.7 HP Grinder, No-Lk, CoverDWE4559N Type 1 9" 6,500 rpm 4.7 HP Angle Grinder No-LkDWE4597 Type 1 7" 8,500 4.9 HP Angle GrinderDWE4597N Type 1 7" 8,500 rpm 4.9 HP Angle Grinder, No-LkDWE4599N Type 1 9" 6,500 rpm 4.9 HP Angle Grinder, No-LkDWE4549N (Type 1) 9" Angle GrinderDWE4517W (Type 3) 7 in Angle GrinderDWE4517W (Type 5) 7 in Angle GrinderDWE4517W (Type 6) 7 in Angle Grinder