Yellow Jacket 60670 12-piece hex key set with case includes the following sizes: 1/20", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" (Lengths range from 2.8" for the 1/20" size to 6" for the 5/16")

• All hex keys from 1/20" to 5/16" are premium 8650 heat-treated steel alloy for rugged use
• Chamfered square cut ends for easy socket insertion
• Corrosion-resistant finish
• Patented organizer case with identifying slots that lock keys in place when not in use
• Ball end keys ease tightening of fasteners where sockets are up to 30° off axis. Provides fast full socket engagement where regular hex keys cannot do the job