About this item 㓵perior Quality㔨ese bits are made to last ensuring a long service life with its premium-grade HSS Steel Tungsten Carbide Steel material that's 100% rust-proof. Absolutely wear-resistant even at 6000-40000 rev/ min when used on pneumatic or electric tools. 㐲ecise Detailing㔨is wood carving bit set includes several bits that is designed with precision so as to make effortless and exceptionally precise rounded grooves in a variety of sizes and shapes! 㕮iversal Compatibility㕮iversal-fit for all standard power drills, rotary tools and die grinders.Especially effective in fluting flat surfaces 㐲acticability㐥rfect for engraving, drilling, beveling, chamfering, grooving, reaming, shaping, and hollowing. A must-have for DIY woodworks and wood carving! Fast, Neat, & Smooth Rounded results even on hardwood! ㇕ARANTEEサying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out.Please contact us if you need assistance,we'll make it right