Size: Extractor #1: 2.45mm, extractor #2: 3.4mm; extractor #3: 3.7mm; extractor #4: 5.3mm; Weight: Approximately 40g/set. Screw Extractor: Get a set of four screw extractors. Compatible With: This screw extractor kit is compatible with multiple drill chuck systems. Included: Comes with an easy to carry pocket sized case so you can carry it anywhere you like. Features: A screw removal tool that has been designed with deep spiral grooves that have a powerful grip to precisely remove broken screws. Material: Made from a strong and reliable alloy steel material. 4Pcs Screw Extractor | Living Social | Living Social