Product Review

SMART-O R23 Oil Drain Plugs provide an innovative, safer alternative to regular oil drain plugs at an affordable cost. Considered the safest and greenest oil plug available, Smart-O plugs reduce oil leaking out of your vehicle and into the environment. Uses high-performance sealing technology and patented anti-leak and anti-vibration mechanism. Designed with an O-ring that expands upon contact with oil, acting as a seal to prevent leakage and creating resistance to the plug coming lose from vibrations from the engine. O-ring reduces need for overtightening. Aluminum washer acts as bushing to reduce metal to metal contact. Head-markings for quick plug identification. Specifications Thread Diameter x Pitch: M18 x 1.5 mm  Hex / Recess: 19 mm Plug Material: Low carbon steel Plug Finish: Black oxide with black dip oil WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.