Kits are made from laser cut cold rolled steel, DOM tubing, and grade 5 structural hardware. Skis not included but we have black ski bike skis or beautiful ski boards with a mountain scene for sale that work perfectly with the kit. Assembly is required, all sets are shipped out with skis NOT attached if you order skis. Instructions will be included. Ski bikes are accepted at over 2000 resorts in Europe and more and more resorts in North America are now allowing ski bikes. Our Ski Bike Conversion Kit converts your existing bike into a ski bike. It comes with everything you need to mount an old cut off pair of skis, ski blades (recommended), or kids skis onto your bike. 90-100 cm are the recommended lengths