?Universal Compatibility: the 1" ball phone mount with the extendable clampimg arms allows to be compatible with 4.0-7.0" large phones (with phone case or not) with max. size 6.9"(L) * 3.5"(W) * 0.62"(T). ?Double 360° Rotation: designed with double socket 1 inch ball joints, this motorbike ball phone mount can be adjusted to any angles or proper position to suit horizontal/ vertical screen requirement; it's more free for adjustment than ordinary one ball joint bracket. ?Anti-Thief Lock & One-Hand Operation: one-click to lock your phone tightly instantly, the motorcycle fork stem phone holder makes sure the mobile secure even on bumpy roads; the clamping feet extending through the retractable modules, people can operation with one hand; with anti-theft knob and key, it dispels your worries about leaving this phone mount outside. The motorbike fork stem ball phone mount makes operation super easy during ride, and prevents being stolen when not in using. ?100% Firm & Double Socket 1" Balls: the motorcycle phone holder automatically locks your phone to ensure your mobile phones super stable; the composite double socket with two-ball joints to provide most steady and flexible rotation! The 1" ball mounts can also fit to ram B size mounts or components! NEVER DROP! 100% SECURE & RELIABLE!. ?Excellent Fits: the motorcycle fork stem phone mount is specially designed to fit into the cylindrical bore wall of fork stems. With 6 sets of expansion plugs, the motorcycle phone mount fits to fork stem holes with a dia. of 0.47"-1.18" (12-30mm). It fits for Yamaha YZF R1M/S R6 R6S, for Kawasaki Ninja 400 250 650 1000SX ZX600 Ninja ZX-6RR ZX-14R ZZR, for CBR 250R 300R 400R 650R 600RR 600 F4I, for BMW S1000RR Suzuki GSX 1300R GSX-R 600 750 1000 Hayabusa, for Ducati V2...