Boom Racing #BR113008BK Aluminum Wheel Adaptors with Lock Screws With Pins & Screws - 4 Pcs Set (12mm Hex) Black Fits most rc cars and trucks. Lightweight upgrade instantly enhances overall performance in handling and durability. Description: set of 4 12mm anodized aluminum hex wheel adaptors from boom racing for standard 1/10 axles. Thanks to strong, high-quality material and precision cnc machining, these 5mm wide hex wheel adaptors are extremely durable and a must for maximum performance. Compatible with most wheels that fit a 12mm hex. Anodized in a range of colors for great personalized scale looks. Sold as a set with hardened steel pins and lock screws for easy installation. Color: black. 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.