Murphy East Coast Oyster Knives New Haven, Boston, NY, Chesapeake, Providence 5 R. Murphy Shellfish Oyster Set: New Haven Oyster Knife 2-5/8 (6.7 cm) inch x 5/8 inch (1.6 cm) blade available carbon or stainless steel. Long easy-grip handle. Stainless steel blade. Murphy shellfish knives are the recognized leaders in the industry. Made with the finest cutlery steel, the blades are uniformly hardened and taper ground. America's Test Kitchen chose our New haven Oyster Knife as the best of six oyster knives they recently tested! Gulf Oyster Knife with 3-3/4 inch (9.5 cm) x 1/2 inch (1.3 cm). Large steel ferrule, long easy-grip handle. Stainless steel blade. Chesapeake Oyster Knife with 3-1/4 inch (8.3 cm) x 5/16 inch (.8 cm) stainless steel blade Boston Knife: Boston Oyster Knife 3-1/2 inch (8.9 cm) x 7/16 inch (1.1 cm) stainless steel blade. Providence Oyster Knife 2-5/8 inch (6.7 cm) x 11/16 inch (1.7 cm) stainless steel blade New York: New York Oyster Knife 4 inch (10.2 cm) x 1/2 inch (1.3 cm) stainless steel blade.