What does the "LR" indicate in the 690LR model number? Support October 30, 2020 21:12 Updated The "LR" stands for lever release. Related articles Can liquid blade coolant be used with the 1410 metal cutting saw? What are air compressor tanks made of? Can I use hot water in my pressure washer? What causes swirl marks? What is the motor diameter of the Porter Cable 7815 router? Comments 0 comments Please sign in to leave a comment.