Easy to use and install: The product is designed for convenient use and installation. This is a manufacturer's product, not a genuine Part Number accessory, but it meets Part Number manufacturing requirements, offering high quality and reliable durability. High-quality materials: Our tool parts are made from premium materials to ensure durability. No matter the challenges, these accessories are built to last. Product Name: Circular Saw Blade Hex Bolt Part Number: 266133-3 Fitment: for 4101RH, 4105KB, BSS610 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, including minor differences in appearance or color, which do not affect functionality. When purchasing, please confirm: 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 color variations between the image and actual item. Measurement error allowed is +/- 1-3 cm.