Grizzly Table Saw G1022 Rip Fence Guide Rails w/spcl bolts also Delta Contractor. The rail diameter is 1 3/8 diameter. The length is 44 1/4 long. The spacing of the mounting holes is 7 1/2 at each end (4 holes per rail). Rails are very straight. The rear rail had considerable surface rust which was wire brushed. Some minor pitting is evident on the rear rail, please see photos. The front rail had minor surface rust also which was wire brushed. Both were treated with WD-40. The rack gearing in the front rail is in very good condition. One of the 4 plastic end caps is missing.