Part Number: 64762000 Included: 1Trigger Valve Assembly as images show Fits the following models: D51256 Type 1 Finish Nailer Kit, D51256 Type 2 Finish Nailer Kit, D51238 Type 1 Brad Nailer Kit, D51430 Type 1 Stapler, D51431 Type 1 Stapler, D51321 Type 1 Coil Roofing Nailer, D51238 Type 2 Nailer, D51256 Type 3 Nailer, D51275 Type 2 Nailer, D51275 Type 3 Nailer, D51430 Type 2 Stapler, D51431 Type 2 Stapler, D51825 3 1/2 Framing Nailer, D51850 3 1/2 Framing Nailer, D51276 15 Gauge Finish Nailer, D51257 16 Gauge Finish Nailer. And also Fits D51275 Type 1 Finish Nailer, D51855 Type 1 Coil Framing Nailer, D51321 Type 2 Coil Roofing Nailer, D51822 Type 4 Framing Nailer, D51844 Type 4 Framing Nailer, D51257K Type 1 16 GA Finish Nailer, D51257K Type 2 16 GA Finish Nailer, D51276K (Type 1) 15 Gauge 1" to 2-1/2" Finish Nailer, D51238K (Type 1) 2" 18 Ga Brad Nailer . A brand-new, unused, unopened, undamaged item in its original packaging.