Free 

Hey Pedro, I do have it but still needs some work with the fingers for which I'm sorry I didnt get round to. Hopefully it works for you and your project, Please check the sizing suits your needs and post some picks if you do take on the challenge, Cheers Jace
Just added the some finger Blades from Baddog01, they should work a treat.
https://www.thingiverse.com/thing:684362












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