The "NEW" CFF Aluminum Pro Double Under Speed Rope is perfect for doing Crossfit(TM) & MMA Style Training * 11" Adjustable Rope (Comes with Allen Wrench for Quick Adjustments) * Quad Ball Bearing System - One at the top of each handle and one at the adjustment of the rope on each side * Rope is 3/32" in diameter (Black coated aircraft cable); Handle - 5 7/8" long * Rope adjusts by a collet with a set screw. (Extra Set Screws included and allen wrench)