Product Description – *** Compatible with BTTF3S, BTTF6S and BTTF12S models ONLY *** NOT compatible withe BTTF8S model (8" track) The NeoLev® Back to the Future Miniature Hoverboard Collection (5 included) is an addition or replacement boards for the following products: SKU# BTTF6D – Back to the Future Miniature Hoverboards (5) with Dual Track SKU# BTTF12S – Back to the Future Miniature Hoverboard (1) with Single 12″ Track SKU# BTTF6S – Back to the Future Miniature Hoverboard (1) with Single 6″ Track SKU# BTTF3S – Back to the Future Miniature Hoverboard (1) with Single 3″ Track Universal Studios officially Licensed. Please note these boards must use the magnetic Base included in SKU#s above. Product Specifications – Five (5) PG Grade Pyrolytic Graphite Hoverboards to scale from movie Accurate decals placed on foam of the following Hoverboards: Marty McFly (BTTFBMF-pink board) Pit Bull (BTTFBPB-black board) Rising Sun (BTTFBRS-white board) No Tech (BTTFBNT-green board) Question Mark (BTTFBQM-black board) Optimal rectangular geometry for maximum levitation Near friction-less movement (oscillates for very long time) Dimensions – Varies: 1.7-2.2” long x 0.6-0.7” wide x 0.1” thick Weight – 1 gram each