Screw Extractor Set Extractor Type Spiral Flute Screw Extractor Number of Pieces 4 Drill Size 17/64 in 23/64 in 31/64 in 39/64 in For Bolt Size 9/16 in to 1 1/2 in Material - Machining Carbon Steel Overall Length (2) 3-3/8 in 3-3/4 in 4-1/8 in Container Type Pouch in Tube Drive Type Square