Description 1. Model no.: a194 2h 2. Type: hexagon head 3. Standard: din, ansi, jis 4. Heat treatment: yes 5. High tensile: yes 6. Packing: 25kg/box and 36 boxes per pallet 7. Origin: ningbo 8.Trademark: sd Features 1. Material: carbon steel and alloy steel 2. Head style: hexagonal 3. Surface treatment: black, 3cr+ zinc, h.D.G, teflon. 4. Welcome to the custom design. Specification 1. Size: 1/2"-4" 2. Grade: 2h 3. Type: hexagon head 4. Standard: ansi Competitive advantages 1. Top quality control 2. Competitive price 3. Various of design 4. Oem accepted 5. Customer's design and logo are welcome