KOOME #Brpg3213-3 32P 13T/ 3.175Mm Aluminum Steel Pinion Gear - 1 Pc Fits most RC cars and trucks. Lightweight upgrade instantly enhances overall performance in handling and durability Fits perfectly. Takes 7 to 15 business days by standard airmail shipping. 80% of packages arrive within 10 business days. Most packages ship within 12 hours. Please allow 1 extra day if order is placed during the weekend. Expediated shipping is shipped by DHL or Fedex. Arrives in about than 2-5 days. Major cities will receive orders earlier.