SureTrack is the heavy duty clip that stabilizes wooden track sections. It holds track securely so it won't come apart during play......even on carpet! Multilevel layouts with complex curves and steep hills are now possible with SureTrack. The clips can be used with straight, curved, and switching tracks along with turntables, tunnels and other specialty pieces. Compatible with BRIO and Thomas the Tank Wooden Railway Systems. Includes 14 heavy duty plastic clips for ages 3 and up from Dazy Inc. Availability: Usually ships in 2-3 business days. ST0012 FREE GROUND SHIPPING ON ALL ORDERS OVER $75.00. Please entry FREESHIPPING in the coupon box on the second page of the checkout. Offer valid for the 48 contiguous states. Certain oversize and drop ship items are excluded.