- Uses Hardened Steel Compression Ring
- Grips inside head of screw with full contact
- Allows free hand for work positioning
- Sizes 1/8 - 3/8 With Screw holding ring
- Wiha Exclusive Chrome-V-Moly Super Tool Steel
- Exact Fit Precision Machined Tips
- Hard Chromed durable Finish
- Guaranteed Quality made In Germany