Spyder Stinger 14 Piece Assorted Woodboring Spade Drill Bit Set Hercules Battery System Constructed from double walled plastic that Coastal Rug Constructed from double walled plastic that is rust proof and virtually indestructible part number ETHXKIT187 Compatible with 3 16 inch shank extensions 1 1 8 all packaged in the same pouch 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