Description: This Listing Includes ONE BRAND NEW Set of gy6 roller weights. These roller weights fit on 152qmi and 157qmj motors. The size of these roller weights are 18mm by 14mm and the weight of these roller weights is 10 grams. We do not know specific models that this part fits on, so please go by the pictures! Thank you You can find these Parts on many models such as: Roketa, Sun-L, E-ton, Baja, Kazuma, Carroll, Stream, Eagle, Taotao, Red Cat, Tank, Giovanni, Aimex, Jackel, Wildfire, Xtreme, Seaseng, Qlink, Yiben, Jonway, JMstar, Vento, TNG, VIP, TaoTao, Peace, Ice, Ect. Shipping and Handling: Free USPS First Class Mail Shipping Product will be shipped out within 24 hours after payment cleared. Return / Refund Return is accepted within 60 days after the buyer receipt the item If this item is damaged or defected upon receipt, customer has up to 60 days from date of receipt for exchange of a new one. Include your name, address, item, and if you are requesting a refund or exchange. After getting the returned item, we will refund the customer at the item's price ( excluding the shipping costs to and from).