These models are capable of 2.5 m stroke and have advantage of which workers can arrange the spring tension without using a ladder. Further these have a drum lock mechanism.

Model Capacity( kg) Cable travel( m)
ELF-3 1.5 - 3.0 2.5
ELF-5 3.0 - 5.0
ELF-9 5.0 - 9.0
ELF-15 9.0 - 15.0
ELF-22 15.0 - 22.0
ELF-30 22.0 - 30.0
ELF-40 30.0 -40.0
ELF-50 40.0 - 50.0
ELF-60 50.0 - 60.0
ELF-70 60.0 - 70.0