ITI Height Extender for the Control Arm SkateThis ITI Height Extender is designed to work in tandem with the ITI Control Arm Skate. The Height Extender provides additional ground clearance when maneuvering certain vehicles. Nested together, the two combine for an overall height of 8. 5". The ITI Height Extender is made from a unique recycled material which provides the most durable and longest lasting performance versus competitive products. All skates by ITI, formerly I Tow In, Inc., are