1/4" Square Drive Deep Sockets with Metric Bi-Hex Profile

Knurled shank for finger turning of free running fasteners
 
Applicable to nuts and bolts used in the aerospace industry
 
Not suitable for machine operation or power tools
 
Highly polished finish
 
•High-performance alloy steel
 
•Less wear of fastener thanks to Dynamic-Drive™ profile
 
•Maximum load distribution and torque from the additional flank area
 
•Thin walled for better accessibility
 
•Standards: ISO 2725-1/1174-1 and DIN 3120
            
            
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