This is a drag race timing light that is custom built, one of a kind, not like the others out that are cheap. The unit features an aluminum channel midsection, custom bent, welded and powdered coated metal upper hoods with ceramic bulb holders. The frame sits on a full metal base, also welded, and the Christmas tree bulb holders are what you would find on an actual tree. It has industrial PLC programmable Logic Controller that is very expensive and that is programed and wired by me. The control boxes are Hoffman industrial metal boxes, with military connectors. The control box is set up exactly like the tree, with LED lights for the tree and industrial LED meter readouts. You are able to practice your reaction time with the full tree or separate with the control box. There are two push button switches that simulate the trans break. You can operate with one or two people, so you can get a buddy and see who has the better reaction time. It also features pro and sportsman timing. This is all well thought through and accurate. You won't find another. Looks very cool in the garage next to the race car!! Local pick up only and cash only. I am the one who built, wired, and programmed it. I can provide a video, text me your phone number. Thanks