PRS Type Lampshade Knobs, mm Standard Set of 2, Clear/Black New, unused, but may have minor scratches due to being imported. AI Explanation: It's not octagonal, but... 【High-Quality Material】 Made of transparent plastic, durable and long-lasting. 【Precise Markings】 Features markings from 1 to 10, making settings easy and highly visible. 【Stylish Design】 The blue octagonal design enhances the instrument's appearance and adds a unique accent. - Color: Blue - Shape: Octagonal - Numbers: 1-10 markings - Material: Transparent plastic - Application: Guitar/Bass control knobs Thank you for viewing.