cord 106 extends through holes 118 120 the inner diameter of holes 118 120 is somewhat larger than the outer diameter of cord 106 so that when holes 118 120 are aligned cord 106 moves easily through the holes spring 116 provides a force pushing button 112 out of cavity 122 this force causes holes 118 120 to tend to misalign thus engaging with and fixing the slider 108 to the cord 106 at a desired location along the cord pressing button 112 toward receiver 114 compresses spring 116 and causes holes 118 120 to align thus unlocking slider 108 from cord 106 when the slider 108 is unlocked it can be repositioned along the length of cord 106 according to one embodiment slider 108 is cylindrical according to another embodiment slider 108 is square rectangular oval or other shape button 112 and receiver 114 may be formed from hardwood metal plastic composite materials or a combination thereof according to a further embodiment the slider may be a different mechanism suitable for releasably fixing to the cord such as a screw clamp or spring loaded clip as shown in fig1 stopper 110 is affixed to the end of cord 106 stopper 110 is.