Norton Speed-Lok fasteners’ quick, tool-free disc changes onto TS or TR back-up pads allow for more grinding time. Twist on and twist off in 2-1/2 turns. Disc locks securely to back-up pad, but is easily removed. Speed-Lok TS back-up pads and discs have all-metal fasteners. Speed-Lok TR back-up pads and discs have rubber threaded hubs.
Speed-Lok TS and TR discs and back-up pads are used on vertical shaft grinders.