1.5" Tri-Clamp /Tri Clover Spools Sizes Available: 1.5" x 2" Tri-Clamp Spool 1.5" x 6" Tri-Clamp Spool 1.5" x 12" Tri-Clamp Spool 1.5" x 18" Tri-Clamp Spool 1.5" x 24" Tri-Clamp Spool 1.5" x 36" Tri-Clamp Spool Specifications: Tri-Clamp Size 1.5" Material 304 Stainless Steel Standard 3A High Polish Spool OD 1.5" Spool ID 1.37" Flange OD 1.984" Bead Center 1.718" OD = Outer Dimension ID = Inner Dimension Disclaimer to Customer: User assumes all responsibility and risks of the system for all | BVV 1.5" Tri-Clamp Spools.