The Milwaukee 48-30-1000 Phillips #2 x 5.8 in. Reduced Collated Magazine Bits (5-Pack) are designed for dedicated use with the Milwaukee collated magazine attachment (49-20-0001). They are made of premium grade S2 tool steel for longer bit life. The #2 Phillips reduced tip allows for better screw engagement and minimizes stripping. MILWAUKEE 5 PACK OF PR2 COLLATOR BITS