This is a Genuine OEM Porter Cable Part.  

This is Part #A04176 Spindle.  This assembly is compatible with several models including:  SEE BELOW FOR MODELS.  Please make absolutely sure this part fits your model before purchasing. 

Porter Cable

7800 Type 1 Drywall Sander

7801 Drywall Sander

259385 Type 2 Drywall-Sander

259485 Type 1 110V Drywall-Sander

7800 Type 3 Drywall Sander 3.5 Amp

7800 (Type 4) Drywall Sander3.5amp Power Tool

7800 (Type 5) Drywall Sander3.5amp Power Tool

7801 (Type 1) Drywallsndr-Hoseless Power Tool

SPECIAL NOTE:  Our new DeWalt parts are all genuine OEM made for DeWalt service.  None of these are third party, off-brand parts.  We will warrant these parts as new and working upon arrival, however, we will not warrant if you bought the wrong part or damage it during installation, so be careful when ordering and in your self-service.