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The details that matter
1.These drills are compatible with our pearl drill machine.
2. 0.5mm->2.3mm The two ends of the bit are extremely sharp, you may use both sides to drill holes,the length of drill bits is 5cm
2.5mm->4mm one end is extremely sharp(please look,second picture),the length of drill bits is 3mm
If you like other size ,please contact me.
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