Tigress Center Rigger Clamp-On System - BlackCenter Rigger Clamp On System For multiple lines in the water. Features: Clamp on center rigger holder 1 1 8" OD base Tigress Track telescoping center rigger Center rigger kit Holder sized to fit 1 5 16" schedule pipe Specifications: Mount: 1 1 8" clamp on Clamp Size: 1 5 16" Outrigger: 8" Black XD Rigging Kit: Center Tigress 88121 1 outrigger center rigging clamping system is used for multiple pipelines in the water. Function: Center bracket rigging