Before you buy: Speed Tiger end mills require correct spindle speed / feed rate for best performance and to avoid breakage. Contact the seller for more info.Specifications:4 flutesCutting Diameter: 1/4"Cutting Length: 3/4" Shank Diameter: 1/4"Full Length: 2-1/2”Package Contents: 5pcs/packageSPEED TIGER PRECISION TECHNOLOGY CO., LTD. stands for High-QualityEstablished in 1998, Speed Tiger specializes in the production of precision carbide end mills, inserts, and other tungsten carbide steel cutting tools. Speed Tiger crafts cutting tool at nanometer precision. The world's highest precision, ±2μm, enables users to achieve unsurpassed cutting quality and performance.Advanced Production Facilities & Technology - Speed Tiger has 73 sets of grinding machines from Germany, Switzerland, Japan and Taiwan.Professional Coating Facilities & Technology - Speed Tiger has its own coating facilities with equipment from Ionbond and Platit of Switzerland. This gives Speed Tiger the ability to develop specialized coatings based on customer requirements. Precise Quality Control Policy - From raw materials to finished products, Speed Tiger insists on a strict inspection policy to make sure every product consistently meets exacting quality standards.Identity Number - Speed Tiger created the End Mills Traceability System in order to ensure the accountability of each process participant. Each end mill has its own identity number on its shank.