I have a couple of questions. Doing a design project for my degree, you don't need to know the ins and outs, but what do you reckon this is made from, and what finishing technique has been used (if any)? It's a chain tool for a bike. I'm reckoning it's cast from aluminium, with the black part being machined from hardened steel. I'd like to think (for ease) that it was all hardened steel, but I don't think you could cast that with that level of detail. As for the finish, I don't know. Thanks for looking!