Manfrotto 547B Professional Video Tripod (Black) Aluminum legs, technopolymers and die castings ensure added strength. 60mm bowl + half ball included; makes it the ideal match for the 701HDV fluid video head, available also in kit with the 501HDV video head. 1 stage, twin-leg construction: gives the tripod greater rigidity. Newly redesigned locking collars guarantee exceptional performance. Included mid level spreader gives added stability.