3mm Shaft Coupler / Extender
Pro Boat Motor Shaft Coupler SW26SS Apache

$4.99

Tamiya Submarine Motor Mini w/Float
Here's a versatile submarine mini-motor from Tamiya.

$11.99

HobbyZone 7.2V 1000mAh Battery: FTB, ZZR, AER, FBC, ABC, ZZR2, FC2
7.2V 1000mAh Battery: FTB, ZZR, AER, FBC, ABC, ZZR2, FC2

$26.99

Metered Glow Driver with 2600mAh Ni-MH & Charger
Features durable anodized aluminum case, and Sure-Lock Glow Plug attachment.

$25.99