... ) surface treatment:Zinc plated 3) High-density ,factory direct price Track light accessories and parts1.Item Number:DS-T0152.Dia: 10 ... : 0.5~2.0mm4.Length: 50mm5.Material: Steel6.Secondary fabrication: cutting, bending, heading, threading7.surface treatment: Zinc plated, anodize , electroplate;8 ... military equipment. Any inquiry,feel free to contact us. Thanks. Track light accessories and parts