15pcs Professional Twist Drill Bits Set High Speed Steel HSS 1/4 Inch Quick-change Hex Shank ferramentas drill for Woodworking

A set of high quality HSS drill bit for drilling in wood, plastic and aluminum and copper.
Features:
Quick change hexagonal shank.
Stable performance and durable.
High-speed steel with nitrogen treatment.
The most commonly used household twist drill set.
It includes 3 sizes(3mm, 4mm, 5mm ) in a twist drill set.
Specifications:
Material: High-speed steel
Surface Treatment: Nitrogen treatment
Hexagonal Shank Diameter: 6.35cm / 0.25in
Package Weight: Approx. 203g / 7.17oz
Package Size: Approx. 13 * 6.5 * 1.5cm / 5.12 * 2.56 * 0.59in
Package List:
15 * Twist Drill