Samsung Galaxy S3 SIII GT-i9300 Extended Tough Case M8 Motorcycle Mount (sku 14355) Waterproof IPX4 Samsung Galaxy S3 GT-i9300 / SGH-i747 / SCH-i535 / SPH-L710 / SGH-T999 Tough Case with a M8 handlebar top clamp mount & 3" extension arm. We have added an extension arm to this popular mounting solution to provide more flexibility & movement from a M8 handlebar mount. The handle bar clamp system is supplied with THREE of the most popular M8 bolts & is suitable for Japanese or European motorcycle models using metric bolts. Mounting system replaces one of the M8 bolts on handlebar top clamp bracket to give a 1" ball fixture to attach the Ultimate Addons Tough Case. Supplied with 3" (7.6cm) double socket high strength composite extension arm.