Gearbox Racquetball Wristlacer (Tether, Cord) - Also fits Ektelon, Head Original Ektelon racquetball wrist cord. "Push" the cord until at least 1/4" is through. Then, the rest can be pulled. Cord with "self loop" for maximum safety Double cord feature, with "inner" cord for self-looping action. Will not fit E-Force racquets or others with small oppenings