STRC has Universal Drive Shaft Sets for the AE SC10/T4 (top picture) (part#STC7455) and HPI Blitz (middle picture) (part#STH103165), and Universal Drive Shafts for the Ofna Hyper 10SC (bottom picture) (part#STO21016). The drive shafts are larger in diameter than the stock drive shafts and they go though a special heat treatment to make these drive shafts more durable then the stock ones. All of the drive shafts are sold on pairs.
STC7455 Universal Drive Shaft Set AE SC10/T4 MSRP $33.99
STH103165 Universal Drive Shaft Set HPI Blitz MSRP $36.99
STO21016 Universal Drive Shafts Ofna Hyper 10SC MSRP $18.99