Motorcycle Metal U Bolt Mount & Strong Grip Holder for iPhone 13 eBay Strong Secure Motorcycle Phone GPS Holders Ultimateaddons Optiline Case Waterproof X XS 11 PRO iPhone en.lbl.motorcycle holder Insta360 Motorcycle U Bolt Mount Bike Phone Holder with iPhone 11 Pro Case Built Quick Mount and Ultra Optiline Case Waterproof iphone X XS en.lbl.motorcycle holder. Motorcycle Metal U Bolt Mount & Strong Grip Holder for iPhone 11 Pro Max Cradle Clamping Dimensions: Cradle will hold phones up to 3. 9 inches wide Lipped grip means phone will stay secure in the holder. The redesigned cradle offers even greater support for larger phones in bumpy conditions. Mount; Accommodates rails from 0. 5 to 1. 25 inch in diameter (1. 2cm 3. 1cm) Two u bolts supplied: 1 x 1 inch (2. 5cm) & 1 x 1. 25 inch (3. 1cm) Zinc coated steel (not rust proof)