Compatibility: N621119 Steel Outer Clamp Washer 648697-00 DCS372 Blade Bolt Compatible with DCS390 DCS391 DCS392 DC310 DCS373 Circular Saw DC310K DC390B DCS393. Premium Material: Made of premium material, not easy to break and can be used for a long time. Easy to install, just replace the parts, no need to repurchase the entire product, saving time and money. Quality Assurance: Well-designed and well-crafted. Not an part number part, but meets part number manufacturing requirements. This is the manufacturer's replacement and is functionally equivalent to the original part. N621119 Steel Outer Clamp Washer 648697-00 DCS372 Blade Bolt Compatible with DCS390 DCS391 DCS392 DC310 DCS373 Circular Saw DC310K DC390B DCS393 Outer Clamp Washer Tool Replacement Part for DeWalt Colour:As shown Material:Metal Package Contents: 1 x Washer 1 x Blade Bolt 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.