[Main Function] This screw extractor kit is used for removing broken studs/pipes and screws. This kit can help you efficiently remove the toughest broken fasteners. [Alloy Steel Material] This screw extractor is made of premium steel material, which has high hardness, rust-proof, reliable and to use. [Left-Handed Helical Design] Our screw extractor adopts powerful multi-tooth and a left-handed helical design for extra holding power and faster threading speeds. Helical grooves insert into itself to increase grip and reduce drag. [What You Get] The package includes 10 pieces of multi-spline screw extractors. And the size is 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32 inches Product Name: Screw Extractor Kit Colour:Black Material:steel Package Contents: 10 x Screw Extractor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.