Rotary knob I->0<-II black with plastic bezel black
https://www.teconex.eu/shop/bs3kn320-rotary-knob-i-0-ii-black-with-plastic-bezel-black-30057
https://www.teconex.eu/web/image/product.template/30057/image_1920?unique=9174c00
Interne referentie: BS3KN320
