OREGON CHAIN FOR HOMELITE CHAINSAW PITCH 21 THICKNESS 1.5 mm Chain adaptable to models: 250 - 252 - 290 - 290C - 300 - 340 - 340C - 3850B - 415B - 4550B - HSC4040 - 4545 The chain is available in the following links: - 57 links: length 33 cm - 61 links: length 35 cm - 65 links: length 38 cm - 67 links: length 40 cm - 69 links: length 40 cm - 73 links : length 45 cm - 78 stitches : length 50 cm OREGON