ELK 3 ton electric chain hoist with eletric trolley Type HKDM0301S 1. Side magnetic braking device 2. Light but durable chain bag 3. Electromagnetic contactor 4. Inverse phase sequence protecting device 5. Light aluminum alloy shell 6. Limit switch 7. Approved by CE&GS 8. Chain: FEC 80 9. Highly effective, lightweight, easily-maintenance 10. Prime quality in China