About the cost of products1. The name of the price 10usd, the cost of this isn't true!2.The Pulley is adapted products, the price is calculated according to the several size, please contact us!3.After confirm the size, I will give you quoted price, and I will changed the correct price.then you pay it !If you would like customized pulley ,Please tell us the ensuing size:1.what is kind of Timing Pulley? (2GT/3GT/HTD3M 5M 8M/S3M 5M 8M /MXL XL L/T5 T10)2.What is materials of Timing Pulley? (Aluminium or Steel or Nylon)3.How many Tooth Number of Timing Pulley? (Teeth number)4.How much The Bore of Timing Pulley? (Inner Bore of pulley)5.How a lot the width of Timing Belt? (Belt width)6.What is Struction of Timing Pulley? (K,AF, BF, CF, WF, or AS, BS, WS)7.What is Fixed mode of Timing Pulley? Keyway or Set Screws or other