Thomas and Betts standard natural-color nylon self-locking Ty-Rap wire cable ties use an embedded stainless steel locking device permanently embedded in the nylon head of the cable tie. The self-locking Ty-Rap cable tie is particularly well suited for both point-to-point wiring and harness fabrication. The low-profile head looks good, and doesn't snag. Stainless steel lock maintains right tension, won't slip. Infinitely adjustable design with smooth molded body is less stress sensitive than notched type cable ties. Ribbed and stippled back keeps cable tie from slipping on wire bundle.