The Milwaukee rip fence kit for circular saws provides a straight cutting edge for fast, accurate cuts. Cut with confidence when you attach the fence directly to model 6405-6 (8-1/4 in.), models 6390-20, 6390-21 or 6394-21 (7-1/4 in.) or model 6460 (10-1/4 in.) circular saws. The kit includes two thumb screws.