Reduce the friction and wear between carbides and trailer surfaces to make loading and unloading easier and more efficient. Low-profile design allows trailers to be used for multiple purposes. Available in three different sizes: 6in., 9in. and 11.5in Best glide option for single-, double- and triple-carbide runners. Updated design provides larger working surface. Additional mounting locations provide increased versatility. Offer a number of ski stance variances based on glide size. 6 up to 10, 9 up to 15, 11.5 up to 20in Will not chip, , break or wear out. Made in the U.S.A