MomanTabletop Tripod for DSLR Camera with 1/4 and 3/8 Screw Mount and Function Leg Design Max Payload of 176 Lb CNC Aluminum Minipod

What is the full length measurement between the foot pads when fully open?

The description shows heights of 3.5cm and 11cm. Is it fully adjustable to anywhere in between or does it only have two possible heights?

how low to the ground does this go?

How do you take off the 3/8" screw?