These Wera 950 Hex Plus Ball End Allen Key / Hex Wrenches are available in common sizes for guitar adjustment and the Allen keys are colour coded for easy identification.

They are made with Wera's Hex-Plus technology that's designed to greatly reduce the risk of stripping screws or nuts by operating with a larger contact surface and allows up to 20% more torque to be applied over a standard hex wrench. The long arm of these Allen keys features a hexagonal ball end which means the screw can be adjusted even if the tool is not directly on centre, great for hard to reach screws. The wrenches (except 0.05", 1/16" and 7/64" sizes) are made from round steel and only hexagonal at the tips, this makes the wrench more comfortable to hold and also more durable, to further increase comfort the wrenches have a rubberised sleeve which is also colour coded and labelled with the size, this is part of Wera's "Take it easy" tool finder system so you can quickly find the size of wrench you need. The wrenches also feature their BlackLaser surface treatment for high corrosion protection and a long service life, the sizes are also lasered onto the key to make the markings abrasion proof (except 0.05" and 1/16" sizes).

The sizes of Wera 950 Hex Plus Allen Keys that can be commonly used on guitars are the following:

• 1.5 mm, metric hardtail and Stratocaster tremolo bridge saddle height adjustment screws (Gotoh, Mexican Fender etc.), most metric wraparound bridge intonation screws
• 2 mm, Gotoh 510UB intonation screws
• 2.5 mm, Floyd Rose Original and Special, Schaller and Gotoh 1996T double locking tremolo saddle lock screws, Gotoh 510UB post height screws
• 3 mm, Floyd Rose Original and Special, Schaller and Gotoh 1996T double locking tremolo nut locking screws, string lock screws and post height adjustment screws
• 4 mm, Truss rods
• 5 mm, Truss rods
• 0.05", American made Fender Stratocaster and Telecaster saddle height adjustment screws
• 1/16", American made Fender bass saddle height adjustment screws, imperial wraparound intonation screws (Gibson, PRS etc.)
• 7/64", Some Fender bass saddle intonation screws
• 1/8", American made Fender guitar truss rod nuts (Stratocaster and Telecaster etc.)
• 3/16", American and Mexican made Fender bass and most Mexican made Fender guitar truss rod nuts

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