Gravity rollers are the most diverse and practical roller. These rollers can be used for most applications, and unlike other types of rollers like grooved or sprocketed, gravity rollers are not limited to any size. The rollers can be incredibly powerful and our engineers will ensure your roller is perfect. We offer gravity rollers in sizes from 1" DIA to 6" DIA. Round axles are available in 1/4 " to 3 7/16" DIA. Hex axles are available from 5/12" hex to 1 1/2". Many bearing options are available as well as a variety of coatings and sleeves, such as urethane, ultrex, electorplating, and knurling.