The built-in mount hole adjustment is a great feature that allows users to adjust the distance of backplate threads according to their socket spacing needs. This ensures a perfect fit every time and makes installation quick and easy by making the backplate compatible with multiple LGA sockets. Dimensions: 92mm x 92mm x 10mm Compatibile with Sockets: LGA 775 / 115x / 1200 / 1366. Included Parts: 1x Bykski Adjustable CPU Block Backplate