
Haoge LMR-C273 Lens Collar Replacement Foot Tripod Mount Ring C for Canon EF 28-300mm f/3.5-5.6L is USM and EF 70-300mm f/4-5.6L is USM Lens Built-in Arca Type Plate
It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.

Wimberley AP-608 Replacement Lens Foot for Canon 800 f5.6 is and Sigma 150-600 f5.0-6.3 Sports
Arca-Swiss Style, Made in USA
Made in USA. Assembled in Charlottesville, Virginia

SunwayFoto LF-C1I Quick-Release Lens Replacement Foot for Canon Lenses
Ideal for Canon 400mm F2.8 IS / ISII , 800mm F5.6 IS

Haoge LMR-C347 Lens Collar Replacement Foot Tripod Mount Ring A II for Canon EF 300mm f/4L USM
EF 400mm f/5.6L USM, EF 70-200mm f/4L USM, EF 70-200mm f/4L is USM Lens Built-in Arca Type Plate
It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard. Reserved 1/4" and 3/8" screw holes at the bottom for attach lens to tripod directly. Built-in strap hole for carry.

iShoot Lens Collar Foot Tripod Mount Ring Stand Base for Canon EF 100-400mm f/4.5-5.6L IS II USM Bottom is Camera Quick Release Plate Compatible with Ball Head of Arca-Swiss Standard Interface
Referring to the original structure design, added the features of finger position and quick release plate, the volume is about 82mm x 38.5mm x 30mm, net weight is about 100g

Elefront Tripod Mount Ring Replacement Foot for Canon EF 100-400mm f/4.5-5.6L is II USM Lens with Built-in Arca Type Quick Release Plate
Arca-Type Compatible Tripod Foot with Anti-slide security features

Jobu Design Replacement Foot for Canon 300F2.8 is 2 and 500mm F4 is 2 Lenses
Better balance for gimbal head use

Haoge Tripod Mount Ring Lens Collar Foot B(W) for Canon EF 300mm f/4L is USM EF 35-350mm f/3.5-5.6L USM EF 100-400mm f/4.5-5.6L is USM
EF 70-200mm f/2.8L USM & is & is II & is III Lens Built-in Arca
It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard. Reserved 1/4" and 3/8" screw holes at the bottom for attach lens to tripod directly. Built-in strap hole for carry.

Haoge LF-C14 Lens Collar Replacement Foot Tripod Mount Ring Stand Base for Canon EF 100-400mm f/4.5-5.6L is II USM Lens Built-in Arca Type Quick Release Plate
It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.

Haoge LMR-C100 Lens Collar Replacement Foot Tripod Mount Ring D for Canon EF 100mm f/2.8L Macro is USM Lens Built-in Arca Type Quick Release Plate
It features Arca-compatible dovetail which allow you attach your lens to Ball Head, Clamp or Panorama Head of Arca-Swiss standard.