
HSS End Mills Sets 20PCS. High Speed Steel Material: Constructed from durable High Speed Steel for superior cutting performance. Spiral Tooth Form: Features a spiral tooth design for efficient chip evacuation and smooth cutting. Sparse Tooth Structure: Designed with sparse tooth spacing to handle various material types effectively. Integral Construction: Built as a single integral piece for maximum strength and rigidity during operation. Multiple Flute Options: Available in 2-flute and 4-flute configurations to suit different machining needs. Comprehensive Size Range: Includes 20 pieces with various shank diameters, lengths of cut, and overall lengths. ANSI/ASME Compliance: Manufactured to meet ANSI/ASME B94.19 standards for quality and interchangeability. Long Length Variants: Offers extra long and long length options for deep slotting and hard-to-reach areas.