Canon Extender EF 2x III brand_Thinktank professional gimbal head designed for

professional gimbal head designed for long telephoto lenses: it'll hold up to 45kg

with minor wear from use

Sporting not a zoom but a dual-focal-length system

A fun novelty

Cosmetic condition is vast but good

Canon Extender EF 2x III brand_Thinktank professional gimbal head designed forCanon Extender EF 2x III teleconverter, in excellent cosmetic condition. Doubles the effective focal length of the lens mounted to it. Since the teleconverter extends into the back of the lens, not all lenses may be mounted: this works with select Canon L series telephoto lenses only. Please confirm compatibility between your intended lens and this teleconverter. Clean glass and excellent function.