Screw Extractor Set, Extractor Type Spiral Flute Screw Extractor, Number of Pieces 4, Drill Size 1-1/16 in, 13/16 in, 13/32 in, 17/32 in, For Bolt Size 3/4 in to 2-1/8 in, Material - Machining Carbon Steel, Overall Length 3-3/4 in, 4-1/8 in, 4-3/8 in, 4-5/8 in, Container Type Wood Block, Drive Type Square