The Parmelee Pipe Wrench is available in 4 different size categories based on pipe or rod diameter and torque requirements. Handles and Girths are mated together, often referred to H & G. There is H1 & G1 (light gauge), H2 & G2 (medium gauge), H3 & G3 (heavy gauge), and H4 & G4 (extra heavy gauge), and each size category comes with 20+ standard stock sizes available.
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