an animal restraint system which involves variable adjustability of maximum extension . a braking device with a pivoting tip which can move from a neutral position to a locked engaged position , a disengaged position , and a semi - engaged position . the semi - engaged position allows for spool rotation in the direction of retraction , while preventing spool rotation in the direction of extension . a brake lock with multiple settings including engaged position , disengaged position , and a semi - engaged position . a spool with teeth where one or more of the teeth is different from the others in shape , size or relative position to promote brake engagement efficiency . a leash maximum settings display . a moving “ leash ” guide which reduces tangling during extension and retraction . an adjustable handle grip to accommodate different hand sizes . a snap - on accessory attachment system . a leash dispenser system which limits full extension to reduce system failure .