描述：HSS Straight Shank Extra Length Drill (A125) High Speed Steel extra length drill for general machining applications. Ideal for long reach applications and for drilling deeper holes by interrupted drilling (pecking) Steam tempered finish improves wear resistance Capable of drilling holes up to 10x diameter in most materials ### 标准 BS 328 ### 高速钢长和加长系列 这些高速钢直柄、右侧切削长系列麻花钻能够钻出高达 10x 钻头直径。 它们的制造符合 BS328/DIN340 RN 和 ISO 标准，建议结合钢和铸铁使用。
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