Usage Tips:Features: The 8-Pin Tube Socket is designed to securely hold your tube in place, ensuring a stable performance. Made of durable ABS material, this tube socket is wear-resistant for long-lasting use. This 8-pin tube socket is suitable for wide ranges of applications. It is for KT66 KT88 6SL7 6SN7 6V6 5AR4/GZ34 5R4GY 5U4G 6AS7G 6B4G 6BL7GT 6F6 6J5 6J7 6L6 6SJ7 274B 348A 350B 421A 5691,6P3P 6P6P 6n8p 6n9p 5Z3P 5Z2P 6j8p EL34 KT66 KT88 6V6 6n5p 5pcs 8Pin Vacuum Tube Socket Base Octal; Specifications: Material:ABS Option Type:GZS8-B1;GZS8-B1-G Diameter:Approx.2.6cm/1.02in Mounting screw Hole Distance: 38mm (center to center) Note: Please allow 1-2cm errors due to manual measurement,please 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: 5x8Pin Vacuum Tube Socket