Type A - with male thread.
Type B - with female thread.
GN 319.5 Revolving Ball Knob, Stainless Steel Shaft
These revolving ball knobs can be used instead of revolving handles e.g. with handwheels.
For variant with steel shaft, see GN319.2
Knob - Plastic, Duroplast (Phenolic PF), temperature resistant up to 110° C, black, shiny finish.
Shaft - Stainless Steel, AISI 303, matt shot-blasted.