Comparison : Item # 12,140, Brass 360 H02 Half Oval 0.375x12"
Item # 12,141, Brass 360 H02 Half Oval 0.375x24"
Item # 12,142, Brass 360 H02 Half Oval 0.375x36"
Item # 12,143, Brass 360 H02 Half Oval 0.375x48"
Item # 12,144, Brass 360 H02 Half Oval 0.375x72"