Shaft in Photo is from the Umbrella mount that comes with the umbrella.

Note all umbrellas come with a Cross bar base but you will not use this when mounting to this base.

Longer Bolts are supplied with the base to mount the umbrella so you will have 4 bolts un used from the Umbrella package.

Base size 800mm x 800mm

Weight 100kg

Base height with wheels 165mm

Lockable wheels

Umbrella base to suit 115-117mm Distance x 4 Holes

Some assembly required

Note shaft shown in pic below is part of the umbrella not the base. This just shows how its fitted.