Figure 9, LB Large Rope Tightner, Single Pack, Eliminates The Frustration Of Tying, Adjusting & Untying Knots, Fits Rope Sizes:, 3/8" 9mm - 1/8" 3mm, Quickly Secures Most Loads, Rope Tension Is Easy To Adjust, High Rope Tension Is Easy To Maintain, Made Of Strong Aluminum With Instructions Laser Engraved On The Surface.