Brief: Discover the 25PCS HSS Twist Drill Bit Set, perfect for professional metalworking. This high-speed steel set offers precision drilling in metal, iron, and stainless steel with sizes ranging from 1-13mm. Durable and versatile, it's a must-have for any workshop.
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Premium HSS 4241, 4341, 6542, M35, M42 materials for superior strength.