Extremely rare Helix vintage 1963 adjustable pipe wrench. Possibly made of stainless steel It has a sliding adjustment on the side. The jaws open up to 1" wide. This would make a great addition to your tool collection. Approximate Measurements The wrench is 8 1/2" long. 1 Markings Helix 8 in, Peterson Tool Co, Eldorado Kansas US, Pat 3555039, Stainless Steel, Other Foreign Pat Issued & Pending Condition Good condition. It has some minor surfave rust, see pictures. The adjustments slide freely. See description above for further info on the condition. Inventory Number 11363 12104.