The Sirui TY-350 Telephoto Lens Support Plate provides a stable lens plate for your telephoto lens and relieves stress on your DSLR body for a rock solid support. The dual contact point design of the TY-350 prevents flex and gives you peace of mind, knowing your camera is solidly supported, rather than having your camera body hanging by the lens socket. The result: sharper shots. Arca-swiss compatible, adjustable for any lens with a lens foot, and long enough to balance any lens on any head.