... steel,alloy steel Weight:0.1kg to 5kgs Certificate:ISO9001 base jack Material:Cast iron,carbon steel,alloy steelWeight:0.1kg ... iron & malleable iron according to ASTM, DIN,JIS, EN, ISO, GB standards.Weight: It ranges from 0.5kgs to 20kgsProcess: Investment ... you with excellent quality, competitive price and on-time delivery. base jack