Mast Mount - 3 InstrumentsScanstrut Scanpod Mast Pods allow installation of instruments at the mast. Whether racing or cruising, Mast Pods give you the best view of your instruments.Features: Universal Mount-designed to fit multiple mast sizes Mast arms pivot about semicircular washers, an additional cross-brace provides stiffness preventing sideways movement The pod seal is manufactured from a high strength silicone, it has a very high resistance to heat and UV so you can be sure it will stand the test of timeSpecifications: Uncut Useable Face: 14.5H" x 4.65W" Overall Dimensions: 17.0"W x 7.1H" Mast Arm: Length: 7.3", Width on lower end 8.3", Max opening 8.1" Fits mast sizes from 3" to 8.8"