... safety ledger head with patent,8 directional for worker used,easy work & stronger. RINGLOCK SYSTEM(ringlock,ring system,scaffolding ringlock,ringlock system scaffold,scaffolding ... dip galvanized,electro galvanized,painting,self-colored,gold color galvanized.3.) Material: Q235, Q345...etc.4.) Finishing:Forged,casted,pressed,cut ...