Scanstrut SC50 Satcom Base Wedge The ScanstrutSatcom Base Wedge features achannel system inside the discs authorizes un-restricted positioning of the antenna mounting bolts.The Satcom mount model is very simple yet clever, you can simply counter rotate the angled discs until top surface is horizontal. This mount includes a fitted watertight seal and is constructed of marine-grade polymer. Product Features: Watertight base seals fitted 4 pairs of 6 angled washers provide a level fastening surface for the antenna mounting bolts A channel system inside the discs allows un-restricted positioning of the antenna mounting bolts Simply counter-rotate the angled discs until the top surface is horizontal Marine-grade polymer