This morning, I found a tool in my car that I can't identify. Fuzzy cell phone pic: It is heavy on the nuts end, and steel as tested with a magnet. The only writing on it is "vanadium". End opposite the nuts is hollow, with machined recesses on the inside walls. It is 3-1/2" long x just over 3/4" dia. I had tires installed last weekend, so am wondering if it may have been left in the car by a tech at the tire shop. Any help identifying this? Thank you.