This survey adaptor is made of two pieces: a 5/8” bushing with a 3/8” female attachment to connect it to a tripod and a removable plate 124mm diameter with a 5/8” male thread that should stay connected to the equipment. With the 324 it is possible to transform any Manfrotto tripod into a tripod compatible with the standard attachment interface system used in the survey and measuring industry. Attachment (bottom): 3/8" female thread; attachment (top): 5/8'' screw; color: black; diameter: 4.88 in.; material: aluminum; weight: 1.54 lbs.