First String Pro Slide 1201856 Black. This slide incorporates a hole for a fall away rest cord to be inserted and a set screw to secure the cord. Specifications for First String Pro Slide 1201856: Manufacturer: First String Color: Black Features of First String Pro Slide: Eliminate cable slide chatter Decrease wear on cables Hole for fall away rest cord Package Contents: First String Pro Slide First String 5915-25-1: Pro Slide 1201856 Black