OREGON CHAIN FOR CHAINSAW ECHO PITCH 21 THICKNESS 1.5 mm Chain adaptable to models: CS-3600 - CS-360EVL - CS-4000 - CS400EVL - CS-4010 - CS440EVL - CS4500 - CS4510 - CS4600 - CS-4610 - CS5000 - 5100 - CS4400 - CS-4200 The chain is available in the following links: - 56 links : length 33 cm - 61 links : length 35 cm - 64 links : length 38 cm - 66 links : length 40 cm - 72 links : length 45 cm OREGON