The FOTGA DP3000 whip speed crank can be attached in the provided square hole at the center of the wheel in the follow focus. Thus, the hand merely has to spin the rod, which turns the wheel. The micro whip allows the user to adjust focus remotely significantly reducing the risk of vibration being picked by the camera. Made of the material as heat-shrink tube and aluminum, this Fotga brand speed crank whip is strong enough and touch good. Diameter of the blue hand wheel is 42mm,and the proper ergonomic design on the wheel makes it easy on using. And it fit for any follow focus with standard accessory port (size: 12mm x 12mm). Safety-look design at the end of termination, which ensure is not fall off the follow focus. Specification Length: 18" Connector size: 12mm x 12mm Color: Black Package Including: 1 X 18" FOTGA Flexible Whip for Follow Focus

Length:18" Connector size: 12mm x 12mm Color: Black. Safety-look design at the end of termination, which ensure is not fall off the follow focus. Made of the material as heat-shrink tube and aluminum, this Fotga brand speed crank whip is strong enough and touch good. Diameter of the blue hand wheel is 42mm,and the proper ergonomic design on the wheel makes it easy on using. And it fit for any follow focus with standard accessory port (size:12mm x 12mm). The micro whip allows the user to adjust focus remotely significantly reducing the risk of vibration being picked by the camera. The FOTGA DP3000 whip speed crank can be attached in the provided square hole at the center of the wheel in the follow focus. Thus, the hand merely has to spin the rod, which turns the wheel.

Minimum Focal Length: 12 Millimeters. Maximum Focal Length: 42 Millimeters. Lens Type: Standard. Brand: FOTGA. Manufacturer: Fotga. Date First Available: August 27, 2013. Is Discontinued By Manufacturer: No. Best Sellers Rank: #56 in Camera Lens Rapid-Focusing Levers. Customer Reviews: 3.9 out of 5 stars 82 ratings 3.9 out of 5 stars. Item model number: DP3009. : B00ESXV54K. Item Weight: 0.9 ounces. Package Dimensions: 17 x 3 x 2.25 inches.