Hollow core inductor with high heat dissipation Special capacitor for audio. sound capacitor Suitable for 4-11 inch speakers below 150W Adopt over current protection device, , long service life. High temperature inductor. 41mm frame inductor is adopted and fixed with cable ties to prevent co-vibration of music Item Type:Speaker Accessories Kits Model: - 305 Filter characteristics: 1 high, 1 medium, 1 low Frequency dividing point: mid-high 4000Hz/ mid-low 900Hz Power: 150w Suitable impedance: 4-8 ohms Dimension: 85 x 62mm/3.3 x 2.4in Application: home speaker high, middle and low three DIY modification upgrade Center hole spacing: 75 x 52mm/3 x 2in color:Photo color Material:plastic Package Contents: 4 x Audio Divider Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.