The Hillman Group 852119 Standard Steel Wheel Roller， Zinc Plated<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Replacement roller for most residential sectional garage doors</li><li>Specifications: 1-7/8" roller， 4-3/8" stem， 7/16" shaft</li><li>Steel Material/Zinc Plated</li><li>WARNING: INCORRECT INSTALLATION OR DOOR POSITION CAN CAUSE SERIOUS INJURY OR DEATH</li><li>See package warnings and enclosed instructions</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31esJzCdA3L.jpg" noproxy>