COMPACT DESIGN: Comes with a snap-on gear ring, a removable silicone gear and an adjustable lens focus ring, which is compatible with a wide range of camera lenses up to 114mm in diameter, solving the problem of changing focusing gears when using different lenses. In addition, it features an ultra-lightweight design and weighs only 290 grams, making it compact and portable for on-the-go use | EASY ADJUSTMENT OF A & B STOPS: The focus follower's A&B stops are adjustable, allowing you to adjust the appropriate A & B focal length according to your shooting needs. In addition, by turning on/off the A & B stop lock, you can also easily switch focus between 360°unlimited zoom and A & B focal length | FOCUSING KNOB: Designed with non-slip and sweat-proof silicone, its delicate damping sensation and ergonomic design help to control your desired focal length more precisely and comfortably for better shooting results | FLEXIBLE SWING ARM POSITION: Quick and easy quick assembly and disassembly on the side and top side of the camera. The Follow Focus can be attached to a camera stand or shoulder rig with just a 15mm rod clamp and extension adapter, and can be tilted up to 190°to accommodate cinema cameras, DSLRs, and lenses of different sizes | PACKAGE LIST: 1 x follow focus, 1 x 15mm Rod, 1 x Rod clamp, 1 x extension adapter, 1 x silicone gear, 1 x lens focus ring, 1 x adjustment tool