Fotga upgrade DP500IIS Quick Rlease dampen follow focus A/B hard stop for 5DII III 7D D90 DSLR

Introduction
A follow focus is a focus control mechanism used in film and video cameras. It is ergonomic rather than strictly necessary; in other words it does not contribute to the basic functionality of a camera but instead allows the operator to be more efficient and precise. It is usually operated by a focus puller but some camera operators prefer to pull their own focus .
The mechanism works through a set of gears on the follow focus that are attached to teeth on the focus ring of the lens. These gears feed to a wheel which, when turned by a focus puller, will spin the teeth and thus the ring on the lens.

Specifications:
бё Material: Sturdy metal
бё Improved design has dampening which gives virtually zero backlash(<>
бё Long-life precision engineered gearbox enables accurate and reliable focusing
бё Compatible with industry standard Follow Focus Whip or Crank.
бё 2 levels adjustable dammping.
бё Gear drive can be mounted from both side.(Works for both right-handed and left handed)
бё This set includes flexible gearbelt can be used with any zoom or prime lenses with a wide range of lens diamters(any size from 46 to 110mm)
бё Adjustable locking systems
бё Mounts onto 15 mm Rod Support (60mm center to center difference).
бё MOD Drive Gear: Industry standard 0.8.Can work with different size gear to meet you need with different lens.
бё Compatible with industry stand 15mm rods
бё Rail distance:60cm // Rail diameter: 15mm // net weight:436g
Suitable for: All DSLR cameras,Vedio cameras
Package including: ? Fotga DP5002S Quick-release dampen Follow focus W/ A/B hard stops x1