Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: 8MM Rearview Mirror for GY6 50 cc 70cc 90 cc 110CC 125 cc 150cc Scooters Moped Roketa Taotao Jonway NST Tank BMS DongFang Supermach Znen
Product description: Rearview Mirror for GY6 50 cc 70cc 90 cc 110CC 125 cc 150cc Scooters Moped Roketa Taotao Jonway NST Tank BMS DongFang Supermach Znen Condition: 100% Brand New and Top Quality. Rearview Mirror for GY6 50cc - 150cc Scooter Diameter: 4.1" Rearview Mirror Mount Pole Diameter: 8mm Please identify Promax. Top Quality Guaranteed. Great Price. Fast Shipping. Good Service. Why our customers choose Promax: 1. Fast Delivery Unlike many online retailers, we carry all our own stock and ship everything from our U.S. warehouse. 2. Know you're getting the right parts. Because we handle all of our own stock, we are able to offer you the clearest photos and most up to date specs on all of our products. While many of our competitors' products offer grainy and out of date spec sheets, our measurements are regularly made in-house to ensure order accuracy and customer satisfaction. 3. Great prices. As a direct importer, we cut out the middle-man and pass the savings along to you. Our prices are more than competitive. 4. Great value. Our branch offices oversea allow us to inspect our supplier's factory lines, ensuring that our parts are OEM quality or better. This high standard of quality combined with our low prices, accurate specs, and fast delivery makes the leader in its field.
Product feature: Rearview Mirror. Top Quality Guaranteed., Rearview Mirror for GY6 50cc - 150cc Scooter, Diameter: 4.1", Rearview Mirror Mount Pole Diameter: 8mm;
Product brand: X-Pro
Target attributes: Position
Answer: attribute: position
value: rearview
source: product title
attribute: position
value: rearview
source: product description
attribute: position
value: rearview
source: product feature