- Ratios from 1 :1 to 40:1 - Single block construction - Output backlash < or = 45’ (0,75°) - Max input speed : up to 4000rpm - Materials : Casing: anodised aluminium Gears/worms : high carbon steel - Ratios 1: to 5:1, Input and output: high carbon steel - Ratios = 8:1, Input :high carbon steel, Output : bronze - Weight: 0.255 kg Option - Can be modified to your specifications