Type E - with threaded blind bore.
GN5330.5 Tristar Knob, Reinforced Plastic, Stainless Steel Bush
These high quality, tristar knobs allow high torques to be reached, and are strong enough to withstand relatively high impact. They are ergonically designed to be easy to use and the shape prevents slipping.
Plastic PA, glass fibre reinforced, temperature resistant up to 130C, black, matt.
Bush - Stainless Steel NI, AISI 303