Canon EF 2x TeleConverter III Tripod Accessories These screw clamps have stainless

These screw clamps have stainless steel locking threads for strength and durability

I started making these straps because I wanted one for myself and I couldn't find anything like it

A double locking nut allows the bar to slide from side to side and to rotate

Load Capacity: 22 lb

Canon EF 2x TeleConverter III Tripod Accessories These screw clamps have stainlessDesigned to extend a lenses focal length by a factor of 2x, the Canon Extender EF 2X III delivers optical performance on par with the finest Canon super telephoto lenses. It delivers seamless communication among camera body, lens and extender, and features coatings to minimize ghosting, flare and chromatic aberration. The Fluorine coating resists soiling, smears and fingerprints. Extender EF 2X III meets all necessary standards in terms of rugged,