Welcome to the store! 1. APPLICATION: The Trident base NAB adapter is designed for Studer for Revox open reel tape recorders, suitable for A77, B77, B67, PR99, A700, C270, A810, A807, C270, C274, A67, etc. 2. STAINLESS STEEL SCREWS: The screw is made of high-strength stainless steel, ensuring it is rust-proof, corrosion-resistant, stable, and durable. 3. WITH SCREW SLEEVE: The reel tape recorder trident base NAB adapter comes with a screw sleeve, featuring exquisite workmanship and a beautiful appearance. 4. EASY TO INSTALL: The reel tape recorder hub base includes installation and maintenance parts. The screw sleeve is removable for quick and easy use. 5. PRODUCT LIST: The product set includes 1 aluminum alloy reel tape recorder hub base, 1 spring, 1 screw, and 1 screw sleeve. Item Type: Reel Tape Recorder Hub Base Product Material: Aluminum Alloy Color: Silver Applicable to: for STUDER for REVOX Open Reel Tape Recorders Suitable for: for A77, B77, PR99, A700, C270, A810, A807, C270, C274, A67, B67, etc. 1 x Hub Base 1 x Spring 1 x Screws 1 x Screw Sleeve Your satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately, and we will provide you with the best solution!