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

For sales are On/off Power Switch and 4 Cell AA Battery Container Combo.

. Compatible with Traxxas HSP HPI Wltoys Himoto Redcat 1/8 1/10 1/16 1/18 RC scale car truck.
. Also can be widely used on RC Buggy/Truck/ Airplane

On/off Power Switch Features:

Connector: JST female plug & Dupont male plug
Wire Length(Each Side): approx. 10cm /3.94 inch
Material: Plastic
Color: Black

Battery Case Features:

Fit for contain Size AA, EQUIV or UM-3X4 battery
Material: Plastic
Color: Black
Connector: JST Male
Size: 57 x 30 x 28mm/ 2.2" x 1.2" x 1.1"(L*W*H)
Wire Length: 15cm/ 5.9"

Package include:

4 Cell AA Battery container x 2
On/off Power Switch x 2