Heavy Duty Dry Line Markers are among the most durable line markers on the market.  11 gauge steel frame, 18 gallon galvanized steel bucket, steel axle bushings and 4 pneumatic tires that measure 3.5" W x 10" in diameter.  Adjustable setting for 2" & 4" lines.  18 Month Limited Warranty. Choose from 100 lb and 50 lb capacity.