41Cr4 Steel -- Each bolt extractor is made of high hardness 41Cr Chrome Steel for ultra durability and tough strength to avoid damage during high-intensity use.
Includes 13pcs Extractors -- 1/4", 5/16" (8mm), 3/8", 10mm, 7/16" (11mm), 12mm, 1/2", 13mm, 9/16" (14mm), 5/8" (16mm), 17mm, 11/16", 3/4" (19mm) suitable for use with impact guns, air ratchets, breaker bars, reversible ratchets, spanners.
Size Etched on the Surface -- Easily identify and select the most suitable size to removal bolt which saves a lot of time, effort, or energy while removing rusted bolts out.
Tight Connection -- The upgrade twist socket set provides superior connection to increase grip to remove old rusted and stripped bolts.
Organized and Easy to Carry -- Packed in heavy-duty blow-molded case for easy storage, it' s ok to take it to anywhere whether it is in your garage or factory.