... 1)perfect surface treatment 2)precise dimensions 3) lowest price glass clamp, 1). Material: Zinc,, Surface: Zinc nickel plating + satin direction/Zinc ... order quantity is more than 2000pcs. 11) For more glass clamp.square glass clamp, round glass clamp,balustrade,handrails, handrail fittings, , handrail fittings, handrail parts, handrail ...