Quality Assurance: Well-designed, well-crafted. Not an part, but meets manufacturing requirements. This is the manufacturer's replacement and is functionally equivalent to the previous part. Made of highly materials, rigorously tested, compact & sturdy, longevous. Easy to install, saves time and money. Please confirm that the model you need to buy matches our model before ordering. Product Description This part is a compatible spare part, and the manufacturer's name and part number are for reference only. Product Description Anvil Impact block NA102737 for DCF850 DCF850N DCF845 Impact Driver Parts Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Color: As Shown Material: Metal Package Contents: 1 x Anvil Impact block Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.