1. Standards: DIN934, ANSI/ASME 2. Materials: SWRCH8A, SWRCH35K, Q195LY, 45# 3. Size: M6-M27 4. Surface: black, yellow zinc, white zinc, white blue zinc, and Dakeluo 5. Grade: 4, 6, 8,10,12 6. Packing: box in carton, then in pallet.