The Jaypro PVB-250 second floor volleyball uprights are designed for use where floor sleeves are impractical. Floor anchors are used instead of floor sleeves. The strong base design and world class uprights provide top level performance without the use of cables or wires. These aluminum uprights feature pin stop height adjustment which ranges from 6'6" to 8'2". The hand knob assemblies secures the steel T-base to anchors in the floor for added safety and security. The Worm Drive Winch eliminates accidental back drive.