14/16mm Car Repairing Tool Spark Plug Socket Wrench Magnetic 12 Angle Spark Plug Removal Tool Thin Wall 3/8" Drive Sockets3/8 interface 12-point 14mm16mm spark plug socket Material: vanadium steel CR-V Size: 14mm &16mm How to choose spark plug sleeve specifications: It only takes 1 step to confirm! According to the spark plug nut, measure the diagonal (12 corners) / the opposite side diameter (6 corners). Can spark plugs with 6-point nuts use our sockets? Answer: Regardless of 6-angle or 12-angle, as long as the nut diameter is 14mm or 16mm, it can be used. Return Policy All of our items come with a 30-day free return policy. If you need to return, please contact us, let us know the detailed problem and send us some pictures for confirmation. We reserve the right to refuse any returns for objective reasons. Shipping Policy All of our items are shipped free with tracking numbers. Orders will be shipped within 3 working days upon receipt of payment. Most orders will be shipped within 1 working day. In most cases, shipping takes 8-12 working days.