... bolt(manufacturer) 1.Material:carbon steel 2.Surface:Plain,black etc 3.Use:metallurgy etc 4.ISO90 Item:large ... size black M16 U bolt(manufacturer) Production Description:1MaterialLow-carbon ... JIS,non-standard7SurfacePlain, zinc plated, black8Colourself-colour, Zinc, Black etc9PaymentTT,30%deposit10Moq1000pcs11Deliveryabout 30days,depend on the total qualityAbout u ...