Clip on panel tabs for 3/16 tube chassis, hole is sized for 2.5mm screws. If you are wanting to add panels or hang lights or accessories on your tube chassis but dont have welded on tabs these clip on tabs are perfect. Made of petg so they have enough flex to clip tight around bars and can be removed and re-used. Pack of 16 which gives you enough to do hood, roof and 2 side panels. These are for 3/16 tube but we also sell them for 5/32 cross bars if you need them.