America's Test Kitchen chose our New Haven oyster knife as the best of six oyster knives they recently tested! New Haven Oyster Knife 2-5/8 (6.7 cm) inch x 5/8 inch (1.6 cm) stainless steel blade. 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. Many styles are offered for varying shell forms... most are available in stainless as well as high carbon steel. Handles are available in a variety of shapes to meet personal preferences