Left hand carbide drill bits, straight shank drill bits, carbide drill bit,twist drill bit

    A drill bit, is a cutting tool that can create holes by machining workpiece in rotating motion. There are many sizes and shapes drill bits, which have been standardized in metric or inch systems, and the cross-sections of most drill bits are circular, but some special drill bits can produce holes of which cross-sections are not circular .

Left hand carbide drill bits, are special drill bits for left hand machines. The situation in which the left drill has to be used are as follows:

    When tapping the left-hand thread, and the bottom hole has to be drilled, it is easy to damage the gear if the drilling rig is working in forward and reverse rotation alternately frequently.

Straight shank left-hand carbide drill bit standard size:

1,Tip angle 118°,d tolerance within 0.005mm

2,Standard size in stock, ready to ship.

3,Accept customize.

product pictures:       

Specification:

Application:Various materials,tungsten carbide drill bits for drilling

Size:38-80, standard or customize

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