Boom Racing BRW780900F-14MMBK KOOME # KRAIT&acirc;&bdquo;&cent; Aluminum 12mm Wheel Hex Widener, Offset: 14 mm, Black Fits most RC cars and trucks. Lightweight upgrade instantly enhances overall performance in handling and durability These +14mm KRAIT&trade; Aluminum Wheel Wideners can fit almost any 1/10 12mm hex RC cars. Total length is 18mm (4mm sits inside the wheel hub).A small upgrade but comes in a big package! They feature BoomRacing's exclusive Padloc&trade; Design where your wideners can be securely fastened by three bolts onto the KRAIT&trade; beadlock wheels.You may also use grub screws to tighten your driveshafts from the two grub screw holes on the driveshaft... more details below 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.