Mercury - Bezel Black Fits 3-3/8" (85 mm) SC100 System Link Gauges 8798721. Overview. The Mercury Black Bezel (8798721) gives your large 3-3/8" (85 mm) SC100 System Link gauges a clean, finished look while protecting the edges of each instrument. It's made from durable, marine-grade material and finished in black to match Mercury's OEM styling. This bezel installs quickly and adds a factory-polished touch to your dash without being flashy.. Sold individually but must be purchased in multiples of