Amazon.com : Tripod Mount Ring, iShoot Lens Collar Support Compatible with Canon EF 100mm f/2.8L Macro IS USM Lens (Replace Canon Tripod Mount Ring D), Built-in ARCA Type Camera Quick Release Plate
Tripod Mount Lens Collar for Canon EOS EF 70-200mm f/4L, 300mm f/4L & 400mm f/5.6L Lens – Fotodiox, Inc. USA
Tripod Mount Lens Collar for Canon EOS EF 28-300mm f/3.5-5.6 L IS & 70-300 f/4-5.6L IS Lens – Fotodiox, Inc. USA
Amazon.com : JJC Tripod Collar Mount Ring, Compatible with Canon EF 70-200mm f/4L /EF 70-200mm f/4L is/EF 70-200mm f/4L is II USM Lens, Replaces Tripod Ring A-2 : Tripod Lens Mount Rings :
Hunt's Photo & Video Photography Retailer
Canon Tripod Mount Ring B (W) (70-200 F/2.8L/IS, 300 F4L, 35-350 F3.5-5.6L) | eBay
Canon Tripod Mount Ring B(W) - Accessory – Kamerastore
Amazon.com : DSLRKIT Tripod Mount Ring B (W) for Canon 70-200mm f/2.8L is II USM & EF 100-400mm f/4.5-5.6L is USM : Electronics
Canon Tripod Mount Ring A II (W) for 70-200mm f/4L Lenses Review
SmallRig Tripod Mount Ring for Canon 70-200mm BSL2361
Amazon.com : Canon Replacement Tripod Mount Ring A II for EF 70-200mm f/4L USM, White Finish : Tripod Lens Mount Rings : Electronics
Tripod Mount Ring for Canon EF 300mm f/4L IS USM Lens
Canon AII(WII) Tripod Mount Ring 2311C001 B&H Photo Video
Tripod Collar Mount Ring for the Canon EF 100mm f/2.8L Macro IS USM lens, TR3
Canon Tripod Mount Ring D(B) for 100mm f/2.8 IS Macro Lens at KEH Camera
Canon Tripod Mount Ring D | Support Parts & Accessories | Canon at Unique Photo
iShoot Metal Lens Collar Tripod Mount Ring Compatible with Canon RF 100-500mm f/4.5-7.1L is USM, Lens Support Holder Bracket Bottom is Arca-Swiss Fit Quick Release Plate Dovetail Groove
Tripod Mount Ring for Canon EF 300mm f/4L IS USM Lens
Pre-Owned Tripod Mount Ring B (W) for Canon 70-200mm f/2.8L is II USM & EF 100-400mm f/4.5-5.6L is USM at Acephoto.net
Amazon.com : Canon Tripod Mount Ring C (W?) - Tripod Collar : Photographic Equipment Harnesses : Electronics
