Detail 01
Two knurled bushings
They clamp the tuner to headstocks within the listed thickness range.

Independent shopping perspective
Built for dulcimer or banjo tuning, this black-button Sta-Tite 870 Series peg uses a friction-style mechanism for direct tuning adjustments. Its nickel-plated shank and two knurled bushings clamp across the specified 11.11–15.8 mm headstock range, while the 5/16-inch post hole accepts strings up to .074 inch in diameter. It is intended as a replacement tuner when the existing headstock and string dimensions match those requirements.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
They clamp the tuner to headstocks within the listed thickness range.
Detail 02
It sets the string-size limit at .074 inch diameter.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is designed for dulcimer or banjo use.
The two knurled bushings fit headstocks from 11.11 mm to 15.8 mm.
The 5/16-inch post hole accommodates strings up to .074 inch in diameter.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.