Mack French De-coring Knife. Mack number F25-15. H. A. Mack Co. is known for its superior-quality kitchenware and is a family-owned and -operated business. Its product line is its first priority and its commitment to quality has been a constant since its founding in 1931. Each of its products is beautifully crafted from managed-forest lumber and any piece would be an excellent addition to your kitchen.