Cadena de sierra de carburo de tungsteno 20" 3/8 .063 72 Stihl MS 311-MS661 * 030-066 ToughMax
ToughMax Australia. Fits any Stihl Saws with 20" bar. Most people want a longer lasting chain that cuts more wood. Semi Chisel is far superior to Full Chisel in regards to this. However, where full Chisel is better is with Green and Soft wood.