Clamping range “0.3mm-4mm (0.01″” – 0.16″”) Drill
The maximum clamping: 4mm”, JT0 taper The smallest end of diameter 5.80mm, Taper 2 degrees 49 minutes 24.7 seconds, Connection size JT0 (inner hole diameter is 5 mm), Material High Carbon Steel, JT0 taper the biggest end of diameter 6.35mm, Outside diameter 21mm.
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Banggood
Warehouse in China.
Link: Machifit 0.3-4mm Mini Electric Drill Chuck JTO Taper
$13.50 with coupon: BGGines
$14.10 with coupon: BG00c906
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