Feature

●Details: The unique spiral groove design allows you to open various standard apertures with a single bit
●There is no need to use a center punch and it is less likely to break compared to regular drills
●Deburring, chamfering, and elliptical holes cannot be used
●Tools used: Drill, bench drill. Working with water cooled can effectively extend the life of the drill bit. 250-400 RPM drill speed is recommended
●Cutting material: Iron plate, aluminum, wood, insulation plate and drill to create various grommets


Description

Details: The unique spiral groove design allows you to open various standard apertures with a single bit.
There is no need to use a center punch and it is less likely to break compared to regular drills.
Deburring, chamfering, and elliptical holes cannot be used.
Tools used: Drill, bench drill. Working with water cooled can effectively extend the life of the drill bit. 250-400 RPM drill speed is recommended.
Cutting material: Iron plate, aluminum, wood, insulation plate and drill to create various grommets.
*Color: Gold (As the picture show)
*Material: High
Surface: Titanium coating.
Standard: 0.2 - 0.9 inches (4, 6, 8, 10, 12, 14, 16, 18, 20, 22 mm)
Package Includes: 1 * Step Drill Bit