Canon Tripod Mount Ring B(W) for Canon 70-200mm f/2.8L, 70-200mm f/2.8L IS, 300mm f/4L, 35-350mm f/3.5-5.6L Lens at KEH Camera
Amazon.com : Tripod Mount Ring, iShoot 78mm Lens Collar Support for Canon EF 70-200mm f/2.8L is/II/III USM, 100-400mm f/4.5-5.6L is USM and 300mm f/4L is USM Lens, Built-in Arca-Swiss Type Quick Release
Canon Tripod Mount Ring and Adapter for RF 100mm f/2.8L Macro IS USM Lens | Bedfords.com
Canon Tripod Mount Ring B(W) - Accessory – Kamerastore
Canon Tripod Mount Ring B (B) for EF 100 f/2.8, Macro USM, MP-E65 f/2.8, EF 180 f/3.5L Macro USM Lens only. : Electronics - Amazon.com
Amazon.com : Canon Tripod Mount Ring C (W?) - Tripod Collar : Photographic Equipment Harnesses : Electronics
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
Canon Tripod Mount Ring D | Support Parts & Accessories | Canon at Unique Photo
Metal Tripod Collar Mount Ring D(B) for Canon EF 100mm f/2.8L Macro IS USM Lens | eBay
Tripod Mount Ring for Canon EF 300mm f/4L IS USM Lens
Tripod Mount Collar Ring A II (W) For Canon EF 70-200mm F4L F4L IS/EF
