Product Name: Machine Key / Square Key Steel / Parallel Key Model NO.: key bar Head Type: Square Surface Treatment: Plain, Zinc Plating Connection: Machine Key Material: Carbon Steel, Stainless Steel Standard: DIN, ANSI, GB, JIS, BSW Key Steel, Key Bar: Square Keys, Machine Keys, Square Key Steel Parallel Key, Machine Square Key: Square Keys, Key Bars, Square Machine Key Trademark: Sea Song Transport Package: Carton + Wooden Pallet / Case Specification: Imperial or Metric Origin: China HS Code: 8483 Product Description Key Steel / Machine Key / Square Key Steel Imperial or Metric sizes. Length: 300mm, 305mm, 3000mm and so on. Material: Carbon steel C35, C45, Q235, A3. Stainless steel ANSI 304, 316.Surface Finish: Plain, Zinc Plating, Black. Size, thickness, style or other specifications can be designed according to your demand.