Turnbuckles: 1. Material: carbon steel, stainless steel 2. Surface: self colored or zinc plated Turnbuckles:1. Type: commercial type turnbuckle, turnbuckle DIN1480, JIS frame type turnbuckles, and etc.2. E/H, E/E, H/H are all available.3. Material: carbon steel, stainless steel4. Surface: self colored or zinc plated Turnbuckles