Goplus 8pc Auger Drill Bit Set 24" Extra Long Wood Drills With Wood Case New Auger bit sizes: 1/4", 5/16", 3/8", 15/32", 9/16", 5/8", 11/16", and 25/32" Auger drill bits are an essential tool for carpenters, plumbers, electricians, etc Auger wood drill bits set in sizes from 1/4" to 25/32";Length: 24" Can be used with hand auger drills, or power drills Package includes: (8) Auger Drill Bits (1) Case