Manually attaching multiple wire ends is fine, but if I have a lot of them, this bad boy will do them all quickly. The magnetic tip includes a removable square shank bit. This is good, since not all electrical end devices have the same size drives. The line knives are interchangeable. The spring-loaded retractable shell keeps the cane blades from clogging up my tool bag. Reams 1/2", 3/4" and 1" tubes which are popular sizes.