Volterin Titanium Twist Drill Bit Set Kit for Metal and Wood, Plastic, Copper, Aluminum, Alloy 230PCs - Coated High Speed Steel HSS 4241 Conventional 135° Tip Metric Large Bits Set & Storage Case

Manufactured from 4241 high speed steel with titanium coating for strength and durability.

The honed cutting edges ensure sharpness and the precise smooth clean hole drilling.

The bits can be used multiple times with bending.

Titanium coated surface prevents rusting, which increase the hardness of the drill bit and reduces heat buildup, make the twist drill bit more wear-resisting for longer life.

135° fast cutting split point penetrates quickly with less pressure.

Produced by precision fully ground which ensures chips move smoothly.