1,Driving wheel – caterpillar tooth coupling dynamic system and transmission system directly
2,Driving wheel with track not on the market by the force of friction affects the belt, the driving wheel and track perfect occlusion, tension affects the treads, avoid skidding tracks, in the true sense of caterpillar vehicles structure.
3,Idler is a driven wheel, are used to support the treads, induction and with caterpillar regulator and adjust tightness of caterpillar.
4,Used the 16 pieces of steel bearings, perfect combination, the crawler drive in operation process to reduce the jitter, caterpillar is not easy to slide, at the same time will drive friction reducing to the pole
5,Pick up day and MC – 2 precision speed measuring system, a patented product, higher precision, more reliable operation and precision is TT motor encoder speed of the hundreds of thousands of times.
6,Day and robot DD1-1 caterpillar vehicles frame type integrated chassis
7,Caterpillar chassis DD1-1 2 slices mirror circuit board as power and support components, connectors used three article 5 mm (M5), USES the linear cutting cut to, a high precision
8,Using four M3 longer screw, can adjust the screw on the slider move any brace position, bearing alloy, wood, acrylic and other chassis, bearing and universal circuit board

1X tank car chassis crawler

 

 

For All Of Our Customer

NOTICE: There are many new brand name of similar item in the market recently, although their price are really cheap, but the quality of their products are also terrible:
1. That factory only produce as a lower price as they can, they won’t care about the quality. All our item is pass the ISO9001 quality certification
2. Have visit and purchase the item samples from some other supplier, many samples are in bad quality. After compare samples again and again from different supplier, finally we provide this top-quality item for you at lowest price.
3. You can purchase a high quality and safety item, but please don’t waste the money for a cheaper but a low quality item. We only sell top-quality item. Base on the top-quality, then we will beat our price as lowest on Aliexpress.
4. We keep a good relationship with the supplier, so that we can get the stable and reliable stock for our client.
5. We only sale the top-quality item, we can provide the reasonable price since we have fight with the supplier as a lowest cost as we can.

 

Warranty

This item comes with the 1 years full warranty

 

Shipping Detail

We ship items via China Post Airmail, EMS, DHL. Normally the shipping charges is free for China Post,reach most of the countries within 10 to 20 business days.

Country	Delivery Time
	Working Days (not including holiday)	5-7	8-11	12-14	15-19	20-22	>22
	Working Days + Saturday + Sunday	5-9	10-15	16-20	21-25	26-30	>31
United States	Rate (item arrived)	5 .1%	50.10%	29.60%	10.50%	4.70%	Refund
United Kingdom	Rate (item arrived)	9.90%	63.20%	19.10%	3.40%	4.40%	Refund
Australia	Rate (item arrived)	21.40%	50.00%	14.30%	7.20%	7.10%	Refund
France	Rate (item arrived)	10.50%	28.60%	43.80%	10.10%	7.00%	Refund
Germany	Rate (item arrived)	11.10%	22.20%	30.30%	20.90%	15.50%	Refund
Canada	Rate (item arrived)	0.00%	47.10%	31.40%	17.60%	3.90%	Refund
Spain	Rate (item arrived)	3.50%	25.00%	47.90%	12.90%	10.70%	Refund

We guarantee it is no tax to United States, United Kingdom, Australia, Canada. To the other country, we will mark the item at the very low value, so that you do not need to pay for the tax or pay a little tax.

We will send out the item within 1 day through EXPRESS MAIL SERVICE with tracking number

We will send tracking number to your Aliexpress email within 1 day after sending out your item

Note after you pay the item

Please email us your phone number after you pay for the item only for delivery purpose.

 

Refund

If you do not receive your item, we will refund you the FULL money or send you a new item according to your request. We take all the responsibility during delivery.

 

Technical Support

We have a professional technical support group for all the item selling. If you need any assistance on your item problem, please do not hesitate to contact us, our technical support will be there to assist you.

 

Return Policy

If you feel disappointed the item, please notify us within 3 days of delivery. Items must be returned in their original condition for refund or exchange. Shipping cost incurred on you.

 

Feedback

We greatly appreciate your POSITIVE feedback. Please do NOT leave negative feedback without asking for help.