Comparison : Item # C4-20EA-18, CEMA C Self-Aligning Troughing Idlers - 4" Diameter
Item # C4-20EA-24, CEMA C Self-Aligning Troughing Idlers - 4" Diameter
Item # C4-20EA-30, CEMA C Self-Aligning Troughing Idlers - 4" Diameter
Item # C4-20EA-36, CEMA C Self-Aligning Troughing Idlers - 4" Diameter
Item # C4-20EA-42, CEMA C Self-Aligning Troughing Idlers - 4" Diameter