Bar supports 1) specification : from 3/4" to 8" 2) packing: 500 pieces per carton ... bars. With great strength, flexibility, anti-static, and environmental protection, this kind of steel bar support ... mainly nine series of steel bar supports:(1) SW1, SW2, and SW3, SW4 and SW5 belongs to BAR SUPPORT series ... materials are low carbon steel Q195, Q215 and Q23 and other quality low carbon steel; We use ...