This CASOMAN 55PCS Master Sockets Set has sufficient sizes to meet your different needs. Professional quality is suitable for engineers, mechanics and other professionalists use.
CR-V material with detent ball hole can be used for impact use.

·Drive: 1/4"
·Material:Chrome vanadium steel
·Deep&shallow(SAE): 5/32",3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16"
·Deep&shallow(Metric): 4mm,4.5mm,5mm,5.5mm,6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm,14mm,15mm
·Accessory: 1/4"Dr.extensions-50mm, 100mm, 150mm; 1/4"M*3/8"F adapter; 1/4"Dr.universal joint

6 POINT
6-point design increases the contact surface,provides maximun torque,fixs fasteners effectively, not easy to fall off,reduces bolts and nuts wear.

DUAL SIZE MARKING
High contrast laser etched and stamped markings for easy and permanent identification of pieces and sizes.

HAR STORAGE CASE
Each slot marked with correspnding size of sockets. The case is convenient for carry and storage.