Civic EG

Hi i've recently bought a type R b18c5 trany for 30$ the only thing is there are metal piece thats coming out when i open the drain plug on the side of the trany

If someone could helpe me how to open this trany so i can check whats broken in it..and see if its worth putting money in

thanks

http://civic-eg.com/viewtopic.php?t=2775&start=0