E+G Handles and knobs E+G Quick release knobs E+G GN 6336.3 hand knob Elesa+Ganter GN 6336.3 Quick-tightening lobe knobMaterial: Reinforced polyamide based (PA) technopolymer. Resistant to solvents, oils, greases and other chemical agents.Colour: Black, matte finish.Assembly: Zinc-plated steel hub with through and oblique hole, partially tapped. E+G GN 6303.1 knurled knob Elesa+Ganter GN 6303.1 Quick-tightening knurled knobMaterial: Black-oxide steel.Assembly: Through and oblique hole, partially tapped. E+G GN 6305.1 Quick release nut Elesa+Ganter GN 6305.1 Quick release toggle nutMaterial: Zinc-plated steel, blue passivated.Toogle nut-welded.