Solid round dies ideal for general purpose threadingAdjustable round dies ideal for precision threadingSpecificationsItem #DescriptionOverall DiameterPackage Type41021/8" - 27 NPT - Solid Round1-1/2"Bulk51021/8" - 27 NPT - Screw Adjustable1-1/2"Bulk5021011/8" - 27 NPT - Screw Adjustable1"Bulk41031/4" - 18 NPT - Solid Round1-1/2"Bulk51031/4" - 18 NPT - Screw Adjustable1-1/2"Bulk41043/8" - 18 NPT - Solid Round1-1/2"Bulk51043/8" - 18 NPT - Screw Adjustable1-1/2"Bulk41051/2" - 14 NPT - Solid Round1-1/2"Bulk51051/2" - 14 NPT - Screw Adjustable1-1/2"Bulk43041/2" - 14 NPT - Screw Adjustable2"Bulk43063/4" - 14 NPT - Screw Adjustable2"Bulk