Instantly attaches to stud members. Eliminates twisting and kinking of wire. Neater, faster professional wiring jobs. Helps keep wire off the floor. Efficient use of time (fast setup, easy to move). Average reliable lifetime of 15+ years. A single Studreel™ can save you hundreds of man hours over its lifetime. 20 in. diameter shock absorbing wire tray. Two position wire hub. Wire weight automatically controls free spool.