This is the Motor Mount for use on the O.S. FS-91 Surpass II and the 110FS-a Engines. FEATURES: Aluminum construction Silver in color INCLUDES: One Motor Mount Four Blind Nuts Eight Spring Washers Four 3.4x16mm Cap Head Screws Four 5x25mm Cap Head Screws REQUIRES: Installation on firewall SPECS: Length: 85mm (3.3") Width: 65mm (2.6") Height: 65mm (2.6") Distance Between Mounting Hole Centers Same Side: 1.01" (25.8mm) Distance Between Mounting Hole Centers Opposite Side: 2.4" (62mm) OS EnginesPart OSM71901200