VCT 5Pc Screw Extractor Set Easy Out Drill Bits guide Broken Screw Bolt Remover

#1 Drill Size - 5/64", Bolt/Screw Size 1/8"-1/4" (3mm-6mm). #2 Drill Size - 7/64" - Bolt/Screw Size 1/4"-5/16" (6mm-8mm). #3 Drill Size - 5/32" - Bolt/Screw Size 5/16"-7/16" (8mm-11mm). #4 Drill Size - 1/4" - Bolt/Screw Size 7/16"-9/16" (11mm-14mm).