The StrongerGrip ThickBurger Grip Axle is a powerful tool for developing various degrees of Grip strength. It is 18" in overall length with a 2-3/8" thick axle connecting two special thickburger shape grip shapes. It offers a unique gripping surface in the two thickburger grips, building crushing hand and finger strength. You can use the 2-3/8" bar or grab the thickburgers in various postions to build tremendous gripping power. Attach to pull up bar, pull down machine or pulling sled and let the Grip building begin. Hook it to loading pin or low pulley machine and do curls and presses. As a bonus the Grip Axle comes with Modular loading sleeve which adds the extreme versatility of plugging the Grip Axle into the Modular Grip System. Plug this into the Modular Core Attachment and explore some crazy rotational exercises. It is yet another tool from StrongerGrip that is only limited by your imagination.