Polaroid Handlebar / Bike Mount for GoPro Hero 4/3+/3 Polaroid Handlebar Mount - Pivoting Arms - Polaroid Warranty Compatibility: GoPro HERO4, 3+ and 3 Cameras Fits Around: Any Bar From: 0.75 to 1.4" / 1.91 to 3.56cm in Diameter Dimensions: 3.8 x 3.5 x 0.6" / 96.52 x 88.90 x 15.24mm Weight: 3.5oz / 99.22g