metric threaded rod material: steel, ss steel Thread: T thread size: 1/4"~2",M4~M48 surface: Plain, zinc, ... H.D.G, DAC, GO metric threaded rod Feature: 1 ... 4"--2"4)SURFACE:ZINC ,HDG, PLAIN, DAC, GOMET5)Thread:T type thread6) Quality control :ISO 90017)Package :Small box ,POLY ... 9)Delivery: 30 days or depend on the qty metric threaded rod