The Sperzel Trim Lok machine head set are the ultimate in tuning keys. The locking feature eliminates the need for multiple string wraps, and trem users no longer need a locking nut that deadens string sustain.
This model is proven to hold strings tightly, allowing the guitar to stay in tune to improve playing enjoyment.
The Trim-Lok is a mechanical type locking system that can be used on ANY guitar, including non-trem or acoustic. 12:1 gear ratio. 6 in line tuners have staggered post heights to eliminate the need for a string tree.
REMEMBER, there is NO TYING or WINDING of the string on the Sperzel Trim-Lok, which stabilises tuning. There is less stretching of the string because you have taken the slack out by pulling tightly when starting.
NOTE! When installing staggered post height sets, there are two short posts, two medium posts and two long posts. Start with high "E" string and work back towards low "E."
The short post = High E & B strings
The medium post = G & D strings
The long post = A & Low E string