Description: [Compact design]: The tap socket set is compact and can work in small space The small size is for M3-M6 taps, and the large size is for M8-M12 taps [Material]: The holder tool for 6-1/2 tap is made of chrome vanadium steel, which is strong and wear resistant to ensure long term performance and reliability [Function]: The tap socket set is professionally manufactured with stable performance. It is suitable for 3/8 inch square wrenches and can be used with manual or tools to improve work efficiency [Easy to carry]: The 3/8 inch drive tap extractor adopts an adjustable design and comes with a storage box, which is easy to carry and store. It is a versatile and convenient tool [Multiple uses]: The tap sleeve extraction tool is suitable for taps, reamer, screw extractors, and other tools with square handles Specification: Material: Chrome Vanadium Steel Size Chart: Small 4.6 cmx2.2 cm/1.81 inchx0.87 inch Large 5 cmx2.7 cm/1.97 inchx1.06 inch Package Includes: 1x Tap Socket Set (1x Large, 1x Small) 1x Silver Extension Rod 1x Box Note: Please allow slightly errors 1-2cm differences due to manual measurement.