While we no longer rent this product, we do carry the Oben ACM-2400 4-Section Aluminum Monopod. Additionally, you may find alternatives on the left-hand side of this page (see Recommended section).
The Manfrotto 681B Heavy Duty Pro Monopod is appropriate for use with the largest telephoto lenses, such as the 500 f/4 and the 400 f/2.8.
It features both 1/4"-20 and 3/8"-16 mounting threads. Its three sections extend to 63.4", and it provides sturdy support.