Oregon 5/32 in. Round Saw Chain Files (2-Pack), for sharpening 3/8 in. low profile and 1/4 in. pitch saw chain in the Chainsaw Accessories department at Lowes.com
STENS New 700-161 Chainsaw File for Stihl 5605 773 5503 Chainsaw Chain Size 3/8 in. 0.404, Length 8 in. 7/32 in. O.D. 700-161 - The Home Depot
FORESTER CHAINSAW SHARPENING FILES SWISS MADE 2-PACK 13/64 FILE FOR 3/ - Saw Salvage
Oregon Chainsaw File Guide, Includes 5/32 in. Round Saw Chain File, for 3/8 in. low profile and 1/4 in. pitch saw chain 25894 25894-21 - The Home Depot
Sharpening a Saw Chain - but how? Instruction | STIHL | STIHL