The Widell USA Cutting Tools product is a high-quality 1 15/16" - 4 TPI 4 Flute Acme Tap made by Widell Cutting Tools in the United States. This hand tap is designed for metalworking and is ready to ship. With a focus on precision and durability, this tap is a reliable option for businesses and industrial projects that require specialized cutting tools. Acme threads (square)