Okw covers for t knobs black 16233140mm white marker line withwithout okw a 50 23 000 this okw a 50 23 100 cover for t knob 23mm black with white marker line is suitable for a spindle shaped knob and has been manufactured with abs ul 94 hb material okw a 50 23 000 cover for spindle knobs 23mm bk wo marker line