CALIBER LowPro Glides, Standard 9" Wide 16 PK Double Set Part No. 13375 Caliber glides reduce 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 The best glide option for single, double, and triple-carbide runners Updated design provides an increased working surface Additional mounting locations provide increased versatility LowPro Glides offer a wide variety of ski stance variances All sets include hardware, individual segments do not include hardware Backed by Caliber's lifetime warranty