Fits BT-4 tube

Semroc Coupler CPL-4-2"(1pk) SEM-CPL-4-2" *

Semroc Coupler BT-4-2"(1pk) SEM-CPL-4-2 Spiral Wound Kraft Paper ID 0.376” OD 0.402&rdq…

Semroc Coupler CPL-4-1.25"(1pk) SEM-CPL-4-1.25 *

Semroc Coupler BT-4-1.25"(3.17cm)(1pk)  SEM-CPL-4-1.25 Spiral Wound Kraft Paper Tube ID: 0.376…

Semroc Coupler for BT-4 tube 1" Length(1pk) Craft Paper SEM-CPL-4-1 *

Semroc Coupler for BT-4 tube  1" Length(1pk) Craft Paper    SEM-CPL-4-1 1 pack ID 0.…

Totally Tubular Coupler CPL-4-34"(1pk) TT-CPL-4-34" * Discontinued

Totally Tubular Coupler CPL-4-34"(1pk)  TT-CPL-4-34 Spiral Wound Kraft Paper ID= 0.376&rdqu…