The product consists of a metal bracket and an ABS plastic backplate, designed for secure dash cam mounting. Key features and compatibility Material: bracket is metal for strong, durable support; backplate is ABS plastic for a lightweight mounting surface. Compatibility: backplate fits 9.66 inch or 10 inch mirror dash cams that have screw spacing of 13 cm by 2.4 cm. Not compatible: does not fit 12 inch mirror dash cams. Why you need it Provides a sturdy, longlasting mounting solution for compatible mirror dash cams. Combines durable metal construction with a lightweight ABS backplate to balance strength and ease of installation. Use scenarios Scenario 1: Installing a 9.66' mirror dash cam in a sedan that uses 13 cm x 2.4 cm mounting holes. Scenario 2: Upgrading or replacing a worn backplate on a 10' mirror dash cam to restore solid mounting. Scenario 3: Equipping a fleet vehicle with a reliable mount for a compatible 9.66' or 10' dash cam to maintain stable recording over time. Specifications Material: metal bracket; ABS plastic backplate Screw spacing: 13 cm by 2.4 cm Compatible dash cam sizes: 9.66' or 10' Not compatible with: 12' mirror dash cams