Guyker Classical Guitar Tuners, 1:18 Ratio Open Frame Style Acoustic Guitar Tuning Keys Steel String Pegs Machine Heads 2 Planks (3+3) (Gold, Black Button)

Smooth.

Seems High Quality. Put them on a Cordoba Orchestra guitar. Only had to drill 2 small center holes. Used 1/16 bit and drilled less than 1/8 inch. All went smoothly and quickly. Orginal tuners were 14:1. New tuners are very smooth and seem of high quality. Very accurate tuning now and also very attractive looks. I think it's worth the $40 cost.

Excelente presentación. Luce muy bien. Y el material se ve resistente. El tiempo dirá si cumple con lo que ofrece.

The delivery was fast. The responce to my return request due to faulty product is no so good. I think these units would be acceptable other than the fault. It seems one tuning peg is missing a spring wave washer required to locate the position of the gears.

This was great value. When I searched the web for these tuners, other sellers wanted $50 to $80 for this same item without identifying the maker. I was looking for good quality replacement tuners when the first Takamine classical I purchased new at Gryphon Stringed Instruments in 1992 wore them out. I saw what I considered low quality substitutes in great abundance going for $50 or less. These Guyker’s grabbed my attention because of the construction using metal string posts, the 1 to 18 turning ratio, a pleasing appearance, and the exact same screw replacement measurements (important) seen on the tuner schematic. The center two screw holes did not match, however. This should not be unexpected; this review suggests how that can be remedied. By removing a small piece of the point on wood toothpicks I coated the ends with quality wood glue and gently tapped them into the unusable screw holes. It is important for the replacement screws to have solid wood to achieve support. The toothpicks can be broken off when set and shaved flush with the headstock using Exacto knife or something similarly sharp. I used a 1/16th drill bit (by hand) to remove just enough wood (barely breaking the surface) to get the new screws started. Most importantly, do not fasten the screws more than gentle firmness when attaching the machine tuners to the headstock. I am very pleased with the feel of these tuners and the way they look. I’m stoked, good luck!

The work fine for the most part. Some of the keys do "ping" when tightening the strings while others work perfectly smoothly and make tuning much easier and precise.