Key-Bak LOCK48 Locking Retractable Key Holder with 48" Kevlar Cord, Retraction Lock, Stainless Steel Swivel Belt Clip, Black 48-Inch Kevlar cord with 8 oz. Of retraction force Polycarbonate case is weather and impact resistant Locking System takes tension off the line and keeps the tether at the desired length Made in the USA by the company that invented the personal retractor in 1948