3Pcs High Speed Steel HSS Titanium Coated Spiral Step Drill Bit Set, 4-12/4-20/4-32mm 29Sizes, 1/4" Hex Shaft Drive Quick Change Multiple Industrial DIY Woodworking Punching Tools by Jelbo …
[Product Information]
- ✅ 1/4" Hex shaft drives are suitable for all kinds of power drills.
- ✅ Double cutting blade design makes for cutting faster,automatic deburring from hole when drilling.
- ✅ 3Pcs spiral step drill bits, 4-12/4-20/4-32mm 29Sizes,main material high speed steel, titanium coated high quality step drill bits.
- ✅ Step drill, also known as stepped drill or pagoda drill, mainly for wood and steel drilling processing.More steps and dense make the hole smoother.
- ✅ According to the need to process different diameter holes, you can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.
