Features: This durable tweeter horn adapter is made of high quality ABS material, sturdy, durable and long service life. Universal treble for head adapter adopts long distance hole designs, more strong usability and applicability. You never have to worry about breaking again. The tweeter drive for head has a professional manufacturing, stable characteristics and high reliability. Apply to connection of treble drive for head and horn above stage voice boxes. Specifications: Material:ABS Color:Black 38mm to 26mm Horn Converter Maximum Screw Hole Distance:Approx.100mm/3.94in; 38mm to 26mm Horn Converter Diameter:Approx.120mm/4.72in 38mm to 26mm Horn Throat Orifice Maximum Screw Hole Distance:Approx.100mm/3.94in; 38mm to 26mm Horn Throat Orifice Diameter:Approx.115mm/4.53in 50mm to 26mm Horn Throat Orifice Maximum Screw Hole Distance:Approx.100mm/3.94in; 50mm to 26mm Horn Throat Orifice Diameter:Approx.115mm/4.53in Option Type:38mm to 26mm Horn Converter Connector;38mm to 26mm Horn Throat Orifice;50mm to 26mm Horn Throat Orifice; Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Tweeter Horn Converter for Head