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4241 High-Speed Steel Twist Drill Suit 25Pc Blister Paper Card Pack Small Drill Bit Boxed Twist Drill
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Name: high-speed steel twist drill suit
the following are the differences between different qualities:
[Excellent Style]]4241 high speed steel material: suitable for drilling wood, plastic and metal(Full grinding opening, sharp and durable) thick blister packaging (no need to staple)
[Promotion]] bearing steel material (pseudo high speed steel): suitable for drilling wood and plastic(Low hardness and blunt opening) blister packaging is light and thin (staple fixed)
[Cobalt-containing]] M35 cobalt-containing high speed steel material: suitable for all the above materials and high hardness materials such as stainless steel(Fine grinding opening, sharp and durable)
specification size:
[25pc suit size]: 0.5mm x 5, 0.6mm x 5, 1.0mm x 3, 1.2mm x 2, 1.5mm x 2,1.8mm x 2 2.0mm x 2,2.3mm x 2,3.0mm x 2, 25 in total. Packing size: 10.5*14.5 * 1.5cm
