5Pcs Screw Extractor Center Drill Bits Guide Set Broken Damaged Bolt Remover Hex Hand Tool Damaged Nut Bolt Remover Stud Kit

[Features]: 1. Screw extractors of different sizes are included to meet different needs. 2. Powerful left-hand spiral design for extra grip. 3. Removal of damaged bolts and pipes can be used to remove most types of damaged, peeling, rusted, broken or stuck screws with relative ease from any wood or metal surface. [Specifications]: Material: high carbon steel Shank: 1/4 Hex Shank 6.35mm Size: 25-83mm Model: 1# 3-6mm(1/8"-1/4") 2# 6-8mm(1/4"-5/16") 3# 8-11mm(5/16"-7/16") 4# 11-14mm(7 /16"-9/16") 5# 14-18mm(9/16"-3/4")