This is an L-shaped adjuster specifically for crystal glass violas. This red crystal features sharp, precise cuts in transparent glass. A sparkling V-cut Swarovski crystal (Classical Pink) is placed on top. It's a pink rhinestone. Product Name: Adjustone Crystal Clear Red Top: Swarovski V-cut Classical Pink Base: Crystal Glass 10mm Clear Red, Button Cut (Crystal with beautiful polygon (faceted) cuts) Screw: M2, long and pointed tip The screw can be replaced with the adjuster currently in use. Each one is carefully finished by hand. We support your performance by adding premium screws to your instrument! Please be very careful when replacing the screws. The instrument, tailpiece, and adjuster in the photos are not included with the product. #viola #viola #adjustone