Features: Brand new and high quality. High voice coil and sound film components with left and right wiring. Lightweight and portable. Designed as a tweeter speaker accessory. Tip: The voice coil is made of silk film, which may deform when pressed from the front. It can be restored by gently pressing from the back. This does not affect performance. If this is a concern, please do not purchase. Specifications: Voice coil DCR: 5.4 ohms (compatible with 4.1–8 ohm systems) Material: Tetoron Color: Black Size (approx): 20mm sound film: Outer diameter: 29mm / Secondary outer diameter: 26mm / Full height: 5mm 20mm voice coil: Inner diameter: 20mm / Height: 4.5mm / Roll width: 1.6mm 25mm sound film: Outer diameter: 38mm / Secondary outer diameter: 37mm / Full height: 7mm 25mm voice coil: Inner diameter: 25.4mm / Height: 5mm / Roll width: 2.3mm Quantity: 1 Set (2 Pieces) (other accessories shown in picture are not included) Note: 1. Conversion: 1cm = 10mm = 0.39 inch 2. Please allow 0–1cm error due to manual measurement. Ensure you are comfortable with this before purchasing. 3. Due to differences in monitor displays, the image may not reflect the actual color of the item. Package includes: 2 Pieces Tweeters Diaphragm Voice Coil (no retail packaging)