Brand Name : New Wholesale Price: 8.64$/pcsMOQ:50PCSYou are expect to contact us freely!Features:100% Brand New.Intelligent car chassis Tracing car Robot car chassis with code diskIdeal for DIYMechanical structure is simple， it is easy to install.This car is the tachometer encoderWith a 4 AA battery box and power switch. (Batteries not included.)Can be used for distance measurement， velocity.Can use with other devices to realize function of tracing， obstacle avoidance， distance testing， speed testing， wireless remote control.Size: approx. 20 x 14cm(L x W); Wheel Size:6.5cm (Dia.) x 2.7cm (H)Note: motor power supply is 3V~6V. All the parameter above is tested without load.Package Content:1 x Car Chassis2 x Gear Motor2 x Car Tire2 x Speed Encoder2 x Fastener1 x Universal Wheel1 x Screwdriver1 x Battery Box (Batteries not included )All Necessary Screw And NutKindly Note: The car Chassis is transparent， you need to tear out protective paper 1) We accept Alipay， West Union， TT. All major credit cards are accepted through secure payment processor ESCROW.2) Payment must be made within 15 days of order.3) If you can't checkout immediately after auction close， please wait for a few minutes and retry Payments must be completed within 15 days.Item are shipped within 5 business days once full payment is settled.If you can't get your items in time，please contact to us first，we wil check and solve it for you soon.We will reply your mail within 24 hours normally. sometimes have a little delay due to the weekend or holiday.If you can't get our mail after 48 hours，please check your spam or contact to us with other mail address.Return: If item DOA(Dead of Arrival)，Buyers Can return it in 14 Days，We will Replace it with New item after we receive DOA item.Please Contact us Before you sent the item back Warranty:All item Comes with Basic 3 Month Sellers Warranty，if item defective in 3 Month，We will offer replacement withour extra Charger(including shipping fee)After we Receive the Defective item.If item Defective after 3 Month，Buyers can still send it back，We will contact suppliers or Manufactory for Warranty.Buyers Might Need pay the Shipping fee For resend the replaced item.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important We request that you contact us immediately BEFORE you give us neutral or negative feedback， so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them!