The 316SS Round Header Side Mount is designed to be used as an alternate to our standard side mount deck hinge. It also can be used as a mounting bracket to fit windshield for mirrors  up to 0.60" in width. Weighing a total of 86 grams (excluding packaging), it is also designed for the 66BSC.25 or 66WSC.25 1/4”-20 pin and #10 (2) fastener (not included). Lastly, this side mount is investment cast 316 Stainless Steel mirror finish, being extremely durable for long-term use without corrosion. Pin and fasteners are not included