Features: Max Life corner for longer life in nails Extreme Speed Channel for fast chip removal Heavy Duty Shank for superior durability 1/4" ball groove shank for quick change applications COMPONENTS/INCLUDES 3/8" x 6" SPADE BIT 1 1/2" x 6" SPADE BIT 1 5/8" x 6" SPADE BIT 1 3/4" x 6" SPADE BIT 1 7/8" x 6" SPADE BIT 1 1" x 6" SPADE BIT 1 Max RPM 3200 1/4" Shak Fits all drills and 1/4" Quick Change Holders