This is a replacement set of two Arrma Kraton 8S BLX Mt Wheel 4.9" with a 24mm Hex, intended for use with the 8s BLX Kraton kits.
 
Features:
Split five-spoke design
Precision molded from high-quality material
Reinforced 24mm hub with molded in steel insert
Supplied as a pair
Specifications:
Wheel Hex fitment: 24mm 
Width: 3.54" (90mm)
Overall diameter: 5.35" (136mm) Overall diameter
Tire mounting diameter: 4.9" (124mm) Tire mounting diameter
Wheel offset: 0.39” (10mm) Wheel offset
Axle hole diameter: 0.72” (18.2mm) Axle hole diameter
 
Includes:
(2) MT Wheel 4.9" (24mm Hex) (Black)