Easy to use and install: The product is designed for convenient use and installation. This is a manufacturer's product, not an original equipment part number accessory, but meets the quality standards of part number manufacturing requirements, providing high quality and reliable durability. High-quality materials: Our tool parts are made of high-quality materials to ensure durability. No matter what challenges you face, these accessories can withstand the test. 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 is compatible with your requirements before purchase. Tips: Product may vary slightly between batches. The actual product may have minor differences in appearance or color, which do not affect functionality. When purchasing, please verify: 1. Part number, 2. Shape and size, 3. Compatibility. Color: Black Material: Steel Package Contents: 4 x Circular Saw Blade Hex Bolt Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.