carbon steel Q235 balls diameter 20.00mm; ApplicationsFor 300 series Trigger sprayers,Website:://.86baiwang.com,Bearings,Dispenser valves, Body jewelry lotion pumps,Aerospace,Quick Disconnect couplings For 400 series Bearing applications,Valve applications, Locking mechanisms,Fasteners,Quick Detail:Carbon steel - Q235PackagingStep 1: Weighing stainless steel balls. Usually the weight is about 10kg.Step 2: Sealed plastic bags Step 3: Put sealed plastic bags into small boxes.Step 4: Each box has the label, including material, Lot No. size, quantity, grade, date......Step 5: Each box directly put into wooden case.