Comparison : Item # C7521-2500-3, Delrin® 150 Natural Round Bar
Item # C7521-2500-6, Delrin® 150 Natural Round Bar
Item # C7521-2500-12, Delrin® 150 Natural Round Bar
Item # C7521-2750-3, Delrin® 150 Natural Round Bar
Item # C7521-2750-6, Delrin® 150 Natural Round Bar