Picco Micro 3 (PM 3), 3/8" P 1.3 mm - 3/8" P Picco Micro 3 (PM3; 1.3 mm): Comfort saw chain for compact and lightweight chainsaws
Oregon File Guide with Round Saw Chain File, 5/32 in. for 3/8 in. low profile and 1/4 in. pitch saw chain in the Chainsaw Accessories department at Lowes.com
Chainsaw file 7/32" round for 3/8 pitch chains, guide and handle 8" file kit | eBay
The Different Types of Chainsaw Chains - An Illustrated Guide
2 In 1 Easy File Chainsaw Chain Sharpening Tool For STIHL 4mm 3/8LP Picco 91 90 - Walmart.com
TriLink 8 Piece Chainsaw Blade Sharpening Field Kit with Carry Case - Walmart.com