Okw peak arrow markers bluegreengrey for com knobs 16mm or 2023314050mm okw a 33 20 007 this okw a 33 20 007 peak arrow marker grey for com knobs 2023314050mm fits easily into the recess of a com knob providing a visible marking that is beneficial when setting and displaying manufactured using pa6 reinforced material okw a 33 20 007 arrow marking element for com knob 20 50mm mineral