Product Information Material: Polypropylene Thread: NST (NH) Length: 13" plus fitting Select a Product Part NumberStyleSize FSTP-LS-25FSingle Layer2-1/2" FSTP-LD-50FDual Layer5" FSTP-LD-40FDual Layer4" FSTP-LD-45FDual Layer4-1/2" FSTP-LD-30FDual Layer3" FSTP-LD-60FDual Layer6" FSTP-LD-25FDual Layer2-1/2"