Description Made of durable plastic for comforatble touch and extra protection for your instrument and hands. It's easy to install and perfectly fit with your guitar and bass. Designed to reduce the strength required to play the instrument, it can help to alleviate the fatigue of long-term instrument playing. accessory for guitar and bass instrument. You can freely install this part on the bass where you need. Features - Material: Plastic.- Color: Black.- Size: 6.6 x 1.3 x 1.4 cm.- Material: Smooth plastic cushion, provides extra thumb rest and protection for your hands and the instrument.- Easy to install: With mounting screws. It's easy to install and fits perfect for your guitar and bass well.- Practical: Help to maintain the correct finger position. Reduce the strength required to play the instrument, relieve repetitive strain injury, help to alleviate the fatigue of long-term instrument playing.- Free to use: accessory for guitar and bass instrument. You can freely set this part on the bass where you need it.-Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!Packing list: 2 x Thumb protector