Coil balance

Hello there. This looks like a 15-111 Pivot Shoe. This shoe works with the 1/2" thick Series 160 Coil Balances, or the 3/8" thick Series 165 Coil springs. You'll need to remove your old assembly and measure the thickness of the coil springs to determine which Series you need. See the videos below. Let me know if you have further questions.