About this item

The 1/2 inch twist drill bit HSS twist drill bits spiral drill bit metal auger hole opener DIY tool is for stainless steel/iron/copper/aluminum/wood/plastic Yaowanguan HSS twist drill bits are made of high quality high speed steel with special sharpening technology, high hardness, sharper opening. The Yaowanguan HSS twist drills are double posterior horn which improve position accuracy and reduce resistance, make the drills more durable and efficient. The Yaowanguan HSS twist drill bit is suitable for electric drill, bench drill, widely used in home decoration, manual DIY and other scenes for stainless steel/iron/copper/aluminum/wood/plastic Recommend adding water when using the drill bits..