Would this work on standard classical guitar headstock?

First off. I haven’t tried it on a classical guitar, but I’ve used it on Fender and Gibson style headstocks, as well as electro-acoustic guitars with no issues. The only guitars I’ve yet to have success with are headless guitars. Bass and guitars with heavier/thicker strings are challenging but some _can_ work. As long as you have some space between the string and the headstock just as the string comes over the nut, you _should_ be ok…

Does the guitar case shut with it on

Difficult to answer as I don’t know what guitar or case you have and even then as I probably won’t have the same guitar and case as you so I won’t know the gap between headstock and case but having said that I have just measured the Pitch-Key and you will need to allow for an extra 25mm of space above the string you fit it too.

Does this work on floyd rose locking system

As the tuning key is set on strings behind the nut then it will neither fit nor be able to to pull or release the E string

Can you do Dadgad , with three of them

The documentation only recommends dropping the top E by a semitone to Eb. I haven’t tried it but it might not have enough tension range to drop it a full tone?

Pk 01 Drop Tuning Key For Guitar

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Description

🎶 Drop the beat, not your tuning – effortless, instant, and pro-ready!

TUNE IN A FLASH - Achieve your perfect drop tuning instantly without hassle
PRECISION CONTROL - Includes fine-tuning hex key and clear instructions for flawless setup
HEAVY STRING READY - Supports string gauges up to 0.054 inch for deeper tones
UNIVERSAL COMPATIBILITY - Works seamlessly with both electric and acoustic guitars
ZERO MODIFICATIONS NEEDED - Attach and remove without altering your instrument

The PK-01 Drop-Tuning Key is a sleek, metal accessory designed for quick and easy drop tuning on electric and acoustic guitars. Lightweight at 20g and compact, it fits string gauges up to 0.054 inch without requiring any modifications to your instrument. Supplied with a fine-tuning hex key and full instructions, it empowers musicians to switch tunings instantly and precisely.

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Product Dimensions	2.8 x 1.6 x 2.2 cm; 20 g
Item model number	PK-02
Colour	Nickel
Material Type	Metal
Item Weight	20 g

PK-01 Drop-Tuning Key for Guitar

Description

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