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Wiha 66991 MagicRing SAE Ball End Hex L-Key Set
The Wiha 66991 MagicRing SAE Ball End Hex L-Key Set provides technicians and field engineers with a professional-grade 13-piece hex key solution housed in the innovative ErgoStar turn-select holder. Manufactured from premium quality tool steel, these keys are CNC precision-machined to reduce cam-out and feature a chrome-plated satin finish for excellent corrosion resistance.
Designed for difficult-to-reach fasteners, these L-keys are 20% longer than standard hex keys. The set incorporates Wiha's MagicRing technology—a steel spring compression ring that securely holds screws in place—alongside a ball end design that permits fastener interlock at angles up to 25 degrees. Note: These tools are NOT insulated and will not protect against electrical shock.
Key Features and Specifications
- Material: Premium quality tool steel with CNC precision machining
- Finish: Chrome-plated satin for maximum corrosion resistance
- Geometry: Chamfered ends with a 20% longer profile for extended reach
- Ball End Interlock: Operates at an angle of up to 25° for off-axis fastener driving
- MagicRing Technology: Integrated steel spring compression ring securely holds screws (sizes 1/8" and larger)
- Organization: ErgoStar turn-select holder with marked sizes; blades are permanently engraved
Included Key Sizes
- Standard Ball End: 0.05", 1/16", 5/64", 3/32", 7/64"
- MagicRing Ball End: 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8"
Frequently Asked Questions
Q: Are these hex keys safe for live electrical work?
A: No. The Wiha 66991 L-keys are strictly non-insulated and will not protect against electrical shock. They must not be used on live circuits.
Q: Does the MagicRing feature apply to all sizes in the set?
A: The MagicRing screw-holding technology is included on the larger sizes (1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", and 3/8"). The smaller sizes (0.05", 1/16", 5/64", 3/32", and 7/64") feature a standard ball end without the retention ring.
Q: At what maximum angle can the ball end function?
A: The ball end design allows for a fastener interlock and continuous operation at angles up to 25 degrees, making it easier to drive screws in confined or obstructed spaces.