... lobe knob,Star lobe knob,Lobe knob with stud. Hand knob, plastic knob, hand control knob, clamping knob, lobe ... sizes which can meet your requirement. MaterialBakelite, steel, plastic, zinc alloySurfaced processZinc alloy: special black, oranger, red ... , silver or blue plastic coatedBakelite: black / orange, glossy finishSteel: sand-blasted / chrome ...