1. Made of top quality high speed steel
2. Sizes 61-80 (.0390"-.0135") for fine jobs
3. 20 piece micro size drill bit set
Port: Shanghai
Payment Terms: L/C,T/T,Western Union,Paypal
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Our drill bits are top quality high speed steel for use on wood, plastic and metal
Finely ground and heat-treated to a Rockwell hardness of 63
Will stay sharp far longer than ordinary carbon bits
Came with a folding steel index with embossed I.D. for each bit handily marked by size
Set includes 20 bits from #61 (.039 inch) to #80 (.0135 inch)
They come in a classic metal drill index case