5 PACK Heat Shrink RED AdhesiveLined DualWall 3:1 4FT 3/8″ ID #CBDWT3X3/8R4-5PK 3:1 3 /8" ID 9.52mm 4Ft. The product is UL recognized at 600V and the file No is E180908. All are F mark. This tubing is free of Pb,Cd, Hg,Cr+6, PBB and PBDE.Thermosleeve HST can be used in any enclosed. byJuly 4, 2026