Change to Drop D in seconds.

The EVH Titanium D-Tuna is an ingenious device that lets you drop the low E string to D and back again instantly. There is no need to interrupt your set to change tunings or switch guitars—just engage the D-Tuna to drop instantly into Drop D tuning. Its titanium construction is stronger, lighter and more reliable than ever, and built to withstand the rigors of the road. It is resistant to corrosion and wear, provides smoother action and adds a premium visual appeal.

The D-Tuna has been standard equipment on Eddie Van Halen's personal guitars and on signature-series guitars equipped with locking tremolos since the early 1990s. Designed and used by EVH, the D-Tuna is endorsed by professional players including Warren DeMartini (Ratt), Michael Wilton (Queensryche) and Dave "The Snake" Sabo (Skid Row).

It is simple to use: once installed and set up, slide the mechanism in for E and out for D. The D-Tuna can be retrofitted to most Floyd Rose-style tremolos in minutes.

It includes easy-to-follow instructions and the following installation hardware:

• 1 EVH D-Tuna unit
• 2 string-lock screws
• 1 spring
• 1 fine-tuning Allen wrench

Available in five finishes: silver, black, green, blue and purple.