1. Made of high quality and durable acrylic 2. It can provide excellent sound extension, excellent intonation and clear and bright voice 3. A smooth bluesy glide 4. Use an all-in-one design and secure materials 5. Height: 28mm, 51mm, 60mm, 70mm 6. Weight: 28mm: 24g, 51mm: 42g, 60mm: 49g, 70mm: 57g