Comparison : Item # 7520-00312448, Delrin® 150 POM-H Shapes FDA Natural
Item # 7520-00402448, Delrin® 150 POM-H Shapes FDA Natural
Item # 7520-00502448, Delrin® 150 POM-H Shapes FDA Natural
Item # 7520-00602448, Delrin® 150 POM-H Shapes FDA Natural
Item # 7520-00802448, Delrin® 150 POM-H Shapes FDA Natural