"Main Features: (1) Specification: regarding the size of eye bolt threads as the specification, just like M6, M8, M10, M12,etc (2) Surface: Depends on material. electro-galvanized and usually white zinc plated, or hot-galvanized. (3)Technology: drop forged (4)Material: SUS304 or 316,Q235 steel or 45# steel (5)Type: C15, normal WLL and specification, or as you needed (6)Packing: plastic bags, carbon boxes, wood pallets and iron pallets (7)Packing marks can be sticked. (8)Detecting: No-go gauge (9)Thread rolling: threads under metric system or British system" http://www.qdshd-marine.com/