Features 1、MULTI SPECIFICATIONS: This kit includes 4 pieces screw extractors, with different specifications and extraction range to meet various needs for removing broken or damaged screws. 2、HIGH SPEED STEEL: These damaged screw extractors are made of 6542 high speed steel with a hardness of 68HRC, with good wear resistance, impact resistance, and a long service life. 3、EASY OPERATION: These screw extractors can be used in conjunction with most drill bits on screws or bolts, making them easy to install on a hand electric drill, which is stable and reliable. 4、APPLICABLE SCENES: This screw remover set is widely used for water pipes, machinery, and equipment maintenance, making it perfect as a gift to your father or other male friends. 5、WITH STORAGE BOX: All damaged screw extractors are stored in a storage box, providing good organization and protection, making it convenient to use and carry anytime, anywhere. Specification Item Type: Screw Extractor Set Material: 6542 High Speed Steel Specification: 4PCS, 1# 2# 3# 4# Extraction Range: 1#: 3-5mm / 0.12-0.2in 2#: 4-8mm / 0.16-0.31in 3#: 5-10mm / 0.2-0.39in 4#: 6-12mm / 0.24-0.47in Package List 4 x Screw Extractors 1 x Storage Box