I have one of these that would work but take a while because its so light and small. It is sharp and cuts small roots fine. A small silky along with one of these will works on small projects. Available w/o the pick also.
https://www.ebay.com/itm/204531254816?epid=1769769966&itmmeta=01HQ6FJWAWJH15TNP3YTVA5W15&hash=item2f9f034620:g:LIMAAOSwkQhlSYNZ&itmprp=enc%3AAQAIAAAA4Ckc5HjGeeDt8rjrcBZyfkNllmY04BYEXaApozcdUmIYUFONQDwxaQHEb387h3%2BWvppDHz119Ir0d4Uu0BV0K%2FjJyMmXvtT%2BXKDOKCE9VQXnb3QOwKwqeGDCRA0cPyqA3BGIN3zbr2Dc5S25V8%2BYaaVZT08vPfQdw7SyxNBAB8tr0VFXs9jfyzPuXjuEc9zq4adh4b5jtVtArJKd%2FHNhszM0BDk5HDRhvbIz3Sqql%2B6AFVQDUuuGJ1Ce5%2FSE8ilsNPqu0q2qikDTuFN5mqmKGFDPMbzfXlsxH9rr5hNgkOEV%7Ctkp%3ABFBMxMXLz7lj
