Eye straps form light-duty mounting bases for blocks, serve as lash-down points, and can provide a fairlead on a cam cleat to hold the line at the cleat. Large eye strap #282: fastener spacing = 2-1/16", Fits cam #280 Eye strap #137: fastener spacing = 1-1/2", Fits cam #150/365 Low-profile eye strap #201: fastener spacing = 1-1/2", Fits cam #150/365 Eye strap #073: fastener spacing = 1-1/4" Micro eye strap #281: fastener spacing = 1-1/16", Fits cam #468/471