Model Number: 3 flute 90 degree HSS Metals Titanium Drill Bit set
<br />Type: Core Drill Bit
<br />Material: High Speed Steel
<br />Use: Metal,Stainless steel, die steel, iron, copper, aluminum
<br />Round hole chamfering and deburring, tapered surface machining
<br />DIY Supplies: also Woodworking
<br />
<br />Specification : 
<br />6.3mm/ 8.3mm /10.4mm / 12.4mm / 16.5mm / 20.5mm
<br />Head Diameter x Shank Diameter x Length
<br />6.3MM :  6.3mm x 5mm x 37mm
<br />8.3MM :  8.3mm x 6mm x 40mm
<br />10.4MM : 10.4mm x 6mm x 39mm
<br />12.4MM : 12.4mm x 10mm x 46mm
<br />16.5MM : 16.5mm x 10mm x 47mm
<br />20.5MM :  20.mm x 10mm x 47mm
<br />
<br />Package includes : 
<br />1 x 6 pcs Chamfer Cutter Mill Drill
<br />
<br />Note: Small parts not for children under 3 years.
<br />Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.