Echo CS-352ES Chainsaw Chain 14" (35cm) - Oregon 91PXL053E / 91PX-53E - 53 Drive Links Challenge Xtreme they are standard chain with

they are standard chain with heavy duty chrome plating

Longer nose life and better performance with a new sprocket nose system

made of 3 electrically welded metal plates

for less friction and a longer life

Replaces 91PX049E / 91PX049 / 91PX049X / 91VG049E

Echo CS-352ES Chainsaw Chain 14" (35cm) - Oregon 91PXL053E / 91PX-53E - 53 Drive Links Challenge Xtreme they are standard chain with91PXL053E 91PX 53E Oregon Chainsaw Chain 53 Drive Links fits 14" (35cm) Echo CS352 ES chainsaw. Oregon 91PXL053E 91PXL053X 91PXLO53E 91PXLO53X 91PXL053 ControlCut Chainsaw Chain 53 Drive Links Replaces 91PX053E 91PX053 91PX053X 91VG053E The Oregon 91PXL ControlCut saw chain range is for homeowners and professional users requiring a low vibration and low kickback saw chain. The semi chisel cutters on the 91PXL are 33% longer than the 91PX Twin cutting