iShoot Lens Collar Foot Support Tripod Mount Ring Base IS-THC856
Suitable for Canon EF 300/2.8, 400/2.8, 600/4, 800/5.6 Lens
Features:
1. The tripod mount base can’t be used individually, must be used with quick release plate, like iShoot QS-120 / QS-220 (Sold Separately), we recommend QS-120 (Sold Separately); if you've got either of the two quick release plates, can install them according to instructions in the photos;

2. Tripod mount base made of Aviation aluminum, CNC precisely machined, anodized surface, with stainless steel screws, 1/4" screw hole, the volume is about 4.5 x 4.5 x 4.3cm, net weight is about 70g; the data of the mounting holes are collected from Canon lens;

3. When used in combination with QS-120 and IS-TB01 (Sold Separately), it can greatly protect the connection of long lens and camera body, decompose external shocks to the camera bayonet, reduce the impact caused by vibration, increase shooting effect rapidly.
Applicable to:
Canon EF 300mm f/2.8L IS II USM
Canon EF 200-400mm f/4L IS USM EXTENDER 1.4X
Canon EF 400mm f/2.8L IS II USM
Canon EF 500mm f/4L IS II USM
Canon EF 600mm f/4L IS II USM
Canon EF 800mm f/5.6L IS USM
(The distance from tripod mount ring to camera bayonet meets the installation requirements after testing)
Package Including:
1 x Lens Tripod Mount Base IS-THC856 for Canon Lens

(Note: Please purchase a QS-120 quick release plate separately to use with the lens collar foot IS-THC856; the other items in the photos not listed here are for illustrating only, not included)