These work pretty good if you can find them in stock anywhere. Just FYI for anybody that needs a driveshaft for their Losi Tenacity, but can’t find them in stock. The Tekno RC M6 Driveshaft/Lightened Outdrives FR/RE SCTE that were made for Losi SCTE work as a pretty good replacement. They are a little snug in the rear, but they work good if you make the hole a little bigger to connect them to the rear differential. The Tekno part number for them is TKR2210X. Hopefully that helps someone.