Mandrex ULTIMATE 4x PowerXbit Spiral Flute Auger Bits with 4 cutting edges for faster and very accurate drilling in wood. Our unique self-feeding threaded QuickTip Technology enables the drill bit to effortless pull itself into soft and hard wood.

Fast Chip removal in hard and soft wood, 5 times quicker compared to standard auger bits and more precise drilling due to our low friction ground flute geometry and 4 cutting edges. This fast and accurate drill bit has a 1/4-inch hex shank and can be used in in cordless and corded impact and drill drivers and drill benches