The Sumner ST‑302 flange spreader delivers a compact, manual solution for separating 150 lb to 1 500 lb flanges up to 4″ (101 mm). Featuring a hardened wedge, large feed screw, and drive compatible with a 1‑3/8″ wrench or ½″ bar. Built tough yet portable, it's ideal for safe and efficient flange maintenance in tight workspace conditions.