This starter combo compatible with 28 Size Nitro Engine.
Does NOT compatible Thunder Tiger models or OS engines.
Hex screw size: 12mm;Suitable for Engine 12mm hex Diameter shaft.
Compatible with HSP HPI Axial Redcat Hobao Himoto Kyosho 1/8 RC nitro truck car.
A great replacement part for the old or broken one.
Compatible Scale:1/8

Backplate Specification:
Material:Plastic&Metal
Replacement Part No.:11012
Backplate Screw Hole Distance:32mm;
Hex Screw Size: 12mm;

Drill Start Wand Specification:
Material:Metal
Replacement Part No.:11003
Shaft Rod Length:150mm
End diameter:5.8mm
Pins:M2x10

Package includes:
1 x RC Electric Starter Drill Plate
1 x RC Drill Start Wand