Safe and durable material Made from high quality PP for safe, long lasting use in guitar saddle setup. The material choice emphasizes durability over time. Enhanced performance Precise internal shape and design allow an ideal fit on the saddle. Anti slip adhesive strips on both sides provide reliable grip during use. Easy to use Rust resistant components support easy tuning and consistent tone by promoting stable saddle contact and smooth operation. Independent height adjustment Independent height control and smooth operation enable precise, repeatable grinding. This helps achieve consistent results without sacrificing control or comfort. Compatibility and function Designed for common guitar saddles requiring reshaping or leveling to improve intonation, clarity, and overall tone. Use scenarios - Install a new saddle on an acoustic guitar to improve intonation and tone. - After string changes, fine tune saddle height for better sustain and clarity. - Maintenance or repair to fix tone irregularities by reshaping saddle edges and ensuring even contact.