No Inspiration

During May, I have to come up with an image that fits the criteria 'Nuts and Bolts'. I'm guessing, that means the workings of something - as in 'getting down the nuts and bolts'. But I haven't got a lot of inspiration for this challenge. I also, didn't have a lot of inspiration for a title for this image - well not one that I felt I could use anyway! I did try a mono conversion, but it wasn't very punchy as a mono.

Done