This retract system is made from aluminium with no plastic parts whatever.
It is air up, air down and comes with all needed accessories.
it contains all needed intersection pieces and also a european made "Festo" manometer .
The gear blocks are drilled for 5 mm wires, so it seems that the landing gear will hold up for planes up to 4-5kgs. On a paved runway I am sure it will even support up to 6-7kg. I will mount this gear intop a 65" KMP Tucano whicch weighs around 4,5 kg. I will report my findings after the first few flights and landings.