This is a Uni compression release lever used on motorcycles. This is not the Uni of seat and seat post fame. This company made filters and motorcycle parts I think. Back in the day Fathers who were building super light bikes for their kids some times picked these levers to save weight. I bought this one new, upgraded the hardware and mounted it for show only. I can provide more pictures if needed. Please ask questions before buying. Sold as is, no refunds. Asking $15 + $4 shipping - US 48 states only.