This is 70111 Easier Power Starter for 1/10 1/8 RC540 Motor in 15 engine Air Helicopter and 18 Engine Air Plane for Japan 18cxp VX16/18/21/25 SH 7/ 18/21/28cxp Engine <br><br><strong>Specification:</strong> <br>Motor: RC540 <br>Battery: 7.2V 1800mAh <br>Deceleration Ratio: 1:3.7 <br>Material: Plastic <br>Suit for RC540 Motor 15 engine Air Helicopter,18 Engine Air Plane Off road truck buggy and car in Japan 18cxp VX16/18/21/25 SH7/ 18/21/28cxp Engine <br>For RC Model Type: 15 Engine Air Helicopter, 18 Engine Air Plane, 1:8 or 1:10 Engine Car <br><br><strong>Package Information:</strong> <br>Package Size: 22 * 11 * 5.5cm / 8.6 * 4.3 * 2.2in <br>Package Weight: 450g / 15.9oz <br>Gift Box Package <br><br><strong>Package List:</strong> <br>1 * 11001 Starter Shell (L/R) <br>1 * 11003 Start Shaft <br>1 * 11012 Drill Holder B <br>1 * Instruction Manual