Vinyl Nirvana is the top seller of vintage Thorens turntable parts on US eBay. Choose us for quality and service…hundreds of others have. Thorens TD-165 counterweight for TP-11 arms. Will NOT fit TD-166 MKII arms. Installs at rear of arm. Each is individually detailed, including several cycles in an ultrasonic cleaner. Condition of each is excellent, with minimal signs of age/wear. I choose only the best parts to sell on eBay from the dozens I have in stock. Your satisfaction is guaranteed. Visit Vinyl Nirvana for more vintage Thorens and AR info.