Easy to use and install: The product design allows for convenient installation and operation. This is a manufacturer's product, not an original equipment Part Number part; however, the quality meets or exceeds Part Number manufacturing standards, ensuring reliable durability. High-quality materials: Our tool parts are made from premium materials to ensure long-lasting performance. These accessories can withstand demanding conditions. Product Name: Circular Saw Blade Hex Bolt Part Number: 266133-3 Fitment: Compatible with 4101RH, 4105KB, BSS610 models Application: Circular Saw Blade Clamp Note: Installation guide not included. Professional installation is strongly recommended. Please verify the item matches your requirements before purchase. Tips: Product may vary slightly between batches due to ongoing updates. Minor differences in appearance or color may occur but do not affect functionality. When purchasing, please confirm the following: 1. Part number 2. Shape, size, and appearance 3. Compatibility information Color: Black Material: Steel Package Contents: 4 x Circular Saw Blade Hex Bolt Package includes only the items listed above; other products are not included. Note: Lighting and display settings may cause slight variations in color between the image and the actual item. Measurement tolerance: +/- 1-3 cm.