9 tooth sprocket for T8F chain. This speed controller features connection terminals for: - Battery - Motor - Charger - Lock / on-off switch - Brake (will shut off motor) - Battery charge indicator - Tail lamp - Throttle. 1x Brushed controller unit 1000w. This item is in the category "Sporting Goods\Outdoor Sports\Scooters\Parts & Accessories". The seller is "tdpro99" and is located in this country: US.This item can be shipped worldwide.