Wedge Plate for GS-850 & GS-950In case your T-top has a slight curve, keep the appearance of your Grand Slam 850 Electric VHF Antenna Mount and Grand Slam 950 Electric Anchor & Stern Light clean by mounting them perfectly straight with our plastic wedge plates.Features:. Corrects angle of GS-850 and GS-950 to perpendicular to the T-top. Fits Grand Slam 850 Electric VHF Antenna Mount and Grand Slam 950 Electric Anchor & Stern Light. No drilling. 1-year limited warranty