Spyder Stinger 14 Piece Assorted Woodboring Spade Drill Bit Set Honed Marble A: Installs over concrete or Q Can I use A: Installs over concrete or wood and is suitable for above Q: What’s the bevel capacity Series Name Stinger Sub Brand Stinger Bit Type Spade bit Bit Length 6 1 2 in Shank Size 1 4 in Shank Type Hex Material Black oxide coated HSS Case Type Soft Quick Change Yes For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty 30 day Set Individual Set Package Quantity 14 CA Residents: Prop 65 Warning(s) Yes Brand Model Compatibility Universal Bit Diameter (Inches) Assorted the Spyder stinger(TM) thread point won't clog and it won't wander making you more productive Impact rated for use in battery powered impacting tools 1 4 In speed hex won't slip in the chuck and fits quick change impact drivers Black oxide finish provides increased durability and lubricity 14pc kit contains: 1 4