Ezi Grip Twin Arm 4 Bike Car RackCarries up to 4 bikes. Not rated for ebikes. The EziGrip twin arm bike racks are suitable for almost every bike shape and style in the market today. They are designed to fit onto a 50mm towball. Each arm can be removed and folded down to reduce the rack footprint when not in use. Distance between supporting arms: 445mm. Made from high strength mild steel with powder coated finish Each arm is wrapped in high density foam that protects your bikes and