Conveniently available and easily installed replacement parts for your Felco pruners guarantee that your favorite shears are the only ones you'll ever need. Contains thumb catch (9/12) compatible with Felco 9, 10, 16, and 17 model pruning shears. When replacing the thumb catch, it is important to also replace the spring washer used to secure the catch so that your pruners continue to properly operate. Made in Switzerland.