Specification Brand : Bostitch BulletPoint : Sold on Amazon BulletPoint1 : Fits Porter Cable Piston Stop 904685 FN250B 16 Gauge Finish Nailer BulletPoint2 : 904685 piston stop acts as a cushion when the piston/driver retracts back into the cylinder after being fired. BulletPoint3 : Because piston stop 904685 gets so much abuse it has a tendency to crack and fall apart. If the fn250b piston stop is damaged or falls out you should replace it. BulletPoint4 : Fits Porter Cable models: FN250B Type 1, FN251 Type 1 Color : White ExternallyAssignedProductIdentifier1 : 704660094668 ExternallyAssignedProductIdentifier2 : 0704660094668 ExternallyAssignedProductIdentifier3 : 767065558005 Hazmat : auto-grounding ItemName : Bostitch N62FNB / DA1564K Nailer 2 Pack No Mar Pads # 9R188782-2PK ItemPackageDimensions_Height : 0.88 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 1 inches ItemPackageQuantity : 1 ItemTypeKeyword : power-finish-nailers Manufacturer : Stanley Black&Decker ModelNumber : 904685 NumberOfItems : 2 PartNumber : 9R188782 ProductDescription : Includes (2) 9R188782 FeetNew, Bulk PackedGenuine OEM Replacement Part # 9R188782-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Bostitch models: N62FNB, DA1564K ProductSiteLaunchDate : 2022-03-09T11:54:09.437Z UnitCount : 2