Pneumatic's Rules confusion

[Nitroxextreme]

Thanks

However im still confused with the rules
why do they say any off the shelf pnuematic devices
(i would think this just means no home made pneumatics for safety)
and then go on to say only bimba and parker linear and rotary from the order list

If you were to buy a gripper already made that isn't a linear or rotar but more like a custom pnuematic couldnt you use any make

Why wouldnt you be able to use non rotating
When you order a normal cyclinder from bimba they always have the option
but once you go to the free FIRST section then there is no option