Creator Kit- Extension Kit Size: 8" x 1" x 1" Hardware included Expand your rail For all Starter boards For Kick Start boards DESCRIPTION Expand Your Rail: Creator Kit Extension Kit comes with 8" pieces to add to your existing rail on all Starter boards and kits. Perfect for making your own balance board that meets your needs and skill level. Please note: Use a board tops in good condition. We are not responsible for damage to your platform. We suggest using at least an 11 ply if you weigh under 220 pounds. If you are over 220 pounds we suggest a 13 or thicker ply. Note: the listed dimensions measure the outside of the rail. TECHNICAL SPECS Size: 8" length x 1" height Weight: 1 pound Hardware included: 2 Phillips flat head machine screws 3/16" x 1.25" x 10-32 threading for countersinking for Starter Kits 2 Phillips flat head machine screws 3/16" x 1" x 10-32 threading for countersinking for Skate Kits 2 nylon insert locking nuts Material: Solid and durable urethane construction to resist wear friction Stiff rail with slight flexibility to bend to concave board Recessed slots for the nuts Long bolt and nut slot has room for error- allows you room to adjust bolt placement VIDEO Are you ready to build your own balance board? Watch these tips and tricks and find out more about our DIY Creator Kits. QUICK LINKS Download our Instruction Manuals click here See more Balance Board training videos click here Learn the details of All Si Boards DIY Creator Kits click here DIY Creator Kit Instructions click here DIY Creator Kit Precautions and Care click here Compare the Tech Specs of all Si Boards DIY Creator Kit click here Shop all DIY Creator Kit Products click here