A. Compatibility: N621119 Steel Outer Clamp Washer 648697-00 DCS372 Blade Bolt is compatible with DCS390, DCS391, DCS392, DC310, DCS373 Circular Saw, DC310K, DC390B, and DCS393. B. Material and Installation: Made of selected material, it is not easy to break and can be used for a long time. It is easy to install; just replace the damaged parts without the need to repurchase the entire product, saving time and money. C. Quality: Well-designed and well-crafted. It is not an original part number part but meets part number manufacturing requirements. This is a manufacturer's replacement and is functionally equivalent to the original part. D. Additional Information: - Product Type: N621119 Steel Outer Clamp Washer 648697-00 DCS372 Blade Bolt, which is a tool replacement part for compatible models mentioned above. - Colour: As shown. - Material: Metal. - Package Contents: 1 x Washer, 1 x Blade Bolt. Only the above package content is included; other products are not included. - Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The measurement allowed error is +/- 1-3cm.