Includes (1) Urethane Retainer. New, Bulk Packed. Genuine OEM Replacement Part # 890725. Consult owners manual for proper part number identification and proper installation. Compatible With The Following Models: PORTER CABLE:, RN175 TYPE 1, RN175 TYPE RN175A, FN250A, FC350 TYPE FC350 TYPE 3, US58, US585, BN125, BN125A, BN200, BN200A, BN200V12 TYPE 1, BN200V12 TYPE 2, 200 250 TYPE 1, 250 TYPE 2, 350 TYPE 1, 350 TYPE 2, DA250 15, DA250A 15, DA250B 15, FC350A TYPE 1, FC350A TYPE FCP350, FM350A, FN250B 16, FR350 TYPE 3, FR350A, FR350MAG TYPE 1, FR350MAG TYPE 2, MS200 TYPE 1 16, MS200 TYPE 2 16, NS100A, NS150, NSS150, NS100 TYPE 1, NS150A TYPE 1, NS150A TYPE FR350 TYPE 2, FRP350 TYPE 1