1)Alternative left-hand thread for the ball socket.

2) Filled with lubricant so as to circle swing agilely without any block.

3) Unless otherwise specified, all dimensions in inches.

Material and surface treatments:

1)Ball socket: low carbon steel Q235A;Ball stud: medium carbon steel 45; Shell: low carbon steel 20.zinc plating.Spring: stainless steel 304.

2)Ball socket and ball stud: alternative stainless steel 304, stainless steel 303 or stainless steel 316.Surface passivation.

3)Ball socket and ball stud: alternative aluminum 6061 with anodic oxidation treatment.