handrail S6311AWH,S6317AWH,S6323WH: 1.material:plastics ABS,AL 6063-T5 2.surface treatment:powder coating handrail S6311AWH,S6317AWH,S6323WH:Stainless steel screw: PA5 × 50mm 6 pcs/ 1 setStainless steel bolt: 6 × 41.2mm 2 pcs/ 1 setPlastic inner cover, outer coverMaterial: plastics ABS,AL 6063-T5Surface treatment: powder coating