VEVOR Pipe Jack Stand, 2500LB Heavy Duty Welding Pipe Stand, with 4-Ball Transfer V-Head and Folding Legs, Adjustable Height 24"-43" 1107B-type Pipe Jacks for Welding

Yes

Yeah they slide right off. These things are pretty legit

Yes, the black holders are held by set screws.

Yes the balls can be removed. Actually the balls are encased in a bracket that has two Wing nuts that fasten want to the V section of the stand. When you loosen the wing nuts, the balls slide right off

Yes

Yeah they slide right off. These things are pretty legit

Yes, the black holders are held by set screws.

Yes the balls can be removed. Actually the balls are encased in a bracket that has two Wing nuts that fasten want to the V section of the stand. When you loosen the wing nuts, the balls slide right off