Product Information Material: Polypropylene Thread: NST (NH) Length: 8" plus fitting Select a Product Part NumberStyleSize FSTP-SS-25FSingle Layer2-1/2" FSTP-SS-30FSingle Layer3" FSTP-SS-50FSingle Layer5" FSTP-SS-45FSingle Layer4-1/2" FSTP-SS-60FSingle Layer6" FSTP-SS-40FSingle Layer4" FSTP-SD-25FDual Layer2-1/2"