20 3/16AF,SOCKET 1/4" 3/16"
20 3/8AF,SOCKET 1/4" 3/8"
20 4,SOCKET 1/4" 4 MM
20 4,5,SOCKET 1/4" 4.5 MM
20 5,SOCKET 1/4" 5 MM
20 5,5,SOCKET 1/4" 5.5 MM
20 5/16AF,SOCKET 1/4" 5/16"
20 6,SOCKET 1/4" 6 MM
