7Pcs Medium Arm Hex Key with Ball End

• Medium Arm Hex keys made from heat treated and hardened Chrome Vanadium steel with black finishing.
• Torque is average 20% higher than DIN standard.
• All keys from 3mm have chamfered edges to prevent damage to blade and fittings.
• Precision produced ball end allows key to drive fixing at up to 30°, using for narrow / difficult reaching working condition.
• Supplied in clip case for safe storage and quick key selection.