Easy to use and install: The product design allows for convenient installation and operation. This is a manufacturer's product, not an OEM part, but the quality meets OEM manufacturing standards, providing high quality and reliable durability. High-quality materials: Our tool parts are made of high-quality materials to ensure durability and long service life. These accessories can withstand various challenges. Product Name: Circular Saw Blade Hex Bolt Part Number: 266133-3 Fitment: for 4101RH, 4105KB, BSS610 Circular Saw Blade Hex Bolt Application: Circular Saw Blade Clamp Note: Installation guide not included; professional installation is recommended. Please verify the item compatibility before purchase. Tips: Product updates may occur; due to different production batches, slight variations in appearance or color may exist, which do not affect functionality. Please verify the following when purchasing: 1. Vehicle part number 2. Appearance, shape, and size 3. Compatibility table Color: Black Material: Steel Package Contents: 4 x Circular Saw Blade Hex Bolt The package includes only the items listed above; other products are not included. Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance: +/- 1-3 cm.