TB-21 is a tripod base to enable to remove the rapid center column ofselected Gitzo Series 2 tripods.
Tripod bases are only to replace therapid center column. They are not for tripods with geared or leveling center column.
Tripod bases fitonly the listed Gitzo tripods. They don't fit any other brands such as Benro.
Tripod bases arenot requiredat all to use Markins ballheads.
Added Benefits Mounted between your tripod and ballhead, this Markins tripod base enhances stability and reduces vibration. Allowing to remove the center column, the tripod base reduces the weight of tripod, and especially, enables the tripod to get closer to the ground for macro photography.
Keep the Convenient Hook Provided connection tube allows to keep the convenient center hook on its place.
Material and Finish The base plate is made of light weight and strong duralumin. Special hard anodized finish gives its surface extreme scratch resistancy.
Installation Instruction For installation instruction click here.