)Material is 40CR
2)Finish:Full polished
3)Size:8-19mm
4)72 teeth time and labor saving

1.Unique open end design allows ratcheting of nuts and bolts without removing the wrench from the fastener making the job faster and easier than ever

2.Ratcheting speed with the access of a traditional open end wrench

3.Saves time, energy, and will work where standard open ends wrenches won't fit

4.Heat treated,drop forged carbon steel

5.Black ABS plastic holder packing

6.Torque meets ANSI standard,full polished