Built-in Arca-Swiss dovetail mounting and includes a Quick Detach (QD) Socket for quickly attaching a compatible strap or sling
3/8" & 1/4" threaded mounting holes
Two M3 screws are included for use as optional safety stops
Light-weight, low profile and provides the best possible stability for your lens
Hard anodized, aircraft grade aluminum for maximum strength and durability

Compatibility:
Canon RF 100-500mm