The Leofoto MH-LRC Full Dynamic Ball Head with Handlebar Control and Lever-Release Hybrid Clamp is designed for photographers, shooters, hunters, and military applications. It features a motorcycle throttle-style knob for rapid adjustment and locking the ball in place. The throttle knob can extend in length for ease of use when wearing gloves in cold or harsh conditions. The MH-LRC Series also features a silver dial on the inside of the throttle-style knob to control the friction, or drag on the ball. The precision-machined ball makes movement silky smooth and with a more than 80% bared ball. The ball head can provide a +/-55Adeg tilt range for a dynamic range of motion. This head mounts via 3/8" and has a panning base which is laser-engraved with markers every 2.5 degrees from 0 to 360 degrees. The redesigned hybrid clamp allows for both arca and picatinny rails to be attached with an hex screw for adjusting the width of the clamp for any non-standard picatinny and arca sized rails. MH-35LRC -Height: 94mm / 3.7in -Base diameter: 45mm / 1.77in -Ball diameter: 35mm / 1.38in -Mounting: UNC3/8" -Weight: 551g / 1.21lb -Max load: 18kg / 39.69lb MH-40LRC -Height: 104mm / 4.09in -Base diameter: 50mm / 1.97in -Ball diameter: 40mm / 1.57in -Mounting: UNC3/8" -Weight: 628g / 1.38lb -Max load: 20kg / 44.09lb MH-50LRC -Height: 117mm / 4.61in -Base diameter: 55mm / 2.1in -Ball diameter: 50mm / 1.97in -Mounting: UNC3/8" -Weight: 756g / 1.67lb -Max load: 25kg / 55.12lb MH-60LRC -Height: 130mm / 5.12in -Base diameter: 60mm / 2.36in -Ball diameter: 60mm / 2.36in -Mounting: UNC3/8" -Weight: 1038g / 2.29lb -Max load: 30kg / 66.14lb