7Pcs Step Drill Bit Saw Drill Set 
1 Center Punch
Sawtooth Drill : 3-6-8mm
Step Drill : 4-12mm, 4-20mm, 4-32mm

Complete set: This set includes all the tools you need for a drill bit. it comes with everything you need to get started and is easy to use!

Material high quality: The drill bit is made of titanium alloy, which is durable and not easy to break. it can be used for a long time.

Wide application: The step drill bit is suitable for a variety of applications, such as woodwork, metal core, hole opener, and more.

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