Consisting of fitting, setting screw, suction cup.
φ10~20

Attach the cup directly to the fitting

Attach the cup directly to the fitting
φ30B

Attach the cup to the fitting with setting screw

Attach the cup to the fitting with setting screw
φ25~50 (except for 30B)

Screw the fitting directly into the cup

Screw the fitting directly into the cup

Simple construction of the cup and the fitting.
Φ10~20

Attach the cup directly
to the fitting

Attach the cup directly
to the fitting