Various sizes of metal tubes struck with a small metal bolt. Recorded with sony ericsson phone mic. Could be used for industrial or tribal percussion etc.
I have an old toy called a zube tube which is a cardboard tube with a plastic cup in each end and a long spring stretched between the cups. When you shake the tube it makes the weirdest sounds! in this recording i am holding and shaking the tube vertically. You can hear the spring oscillating.