THTEN DWO1DT995 Replacement Head Compatible with Dewalt DCST970,DCST922, DCST990,DCST920,DCST925,DCST991 Cordless String Trimmer with 0.080" 20ft Trimmer Spool Line : Amazon.ca: Tools & Home Improvement
DEWALT DCST990 40V MAX String Trimmer w 4Ah Battery a-x | eBay
DEWALT DCST990 40V MAX String Trimmer w 4Ah Battery a-x | eBay
Rino-Tuff Brush Cutter Head on DeWalt DCST990 (Type 1) 40V Max Lithium Brushless String Trimmer - YouTube
DWO1DT995 Replacement Head Compatible with Dewalt DCST970,DCST922,DCST990,DCST920,DCST925,DCST991 Cordless String Trimmer, Replacement Head with Pre-Wound 0.080" 20Ft Line : Amazon.ca: Everything Else