Biker Gripper Control Mount System-Chrome (For Harley & Metric Motorcycles) Each Biker Gripper mounting system is crafted in the USA through a patent CNC process using high quality aircraft grade aluminum making your mounting system more lightweight, much better looking, and most importantly more durable. The body of the Biker Gripper is injection molded using Dupont Delrin Acetel resin thermoplastic and your electronic device is held securely in place with polyurethane fabric to prevent scratching and four stainless steel springs with an 18 pound grip.The Biker Gripperis the most secure device ever developed to mount your cell phone or other devices to your motorcycle. The grip range of the Biker Gripper head is 1.9 to 4.2. Fits a wide range of metric and all Harley-Davidson motorcycles. Control Mount: attaches to handlebar control clamps (clutch or brake side). Replaces the two factory pinch bolts with new stainless bolts and spacers on handlebar controls.