The kit contains the 3905 Rail Bolt Driver and the 3901 Rail Bolt Wrench, for installing both the angled rail bolt and the straight rail bolt.
#1: Machine threads allow you to screw lag end of the tool into handrail fittings or newels.
#2: Magnetic end allows you to easily position nut from S-9600 Rail Bolt Kit.
#3: Pulling rubber band allows you to start tightening nut from S-9600 Rail Bolt Kit.
#4: Wrench end allows you to completely tighten nut from S-9600 Rail Bolt Kit.