Gas Gas oil drain bolt with 13mm head
 

These plated oil drain plugs do away with the allen bolt that tends to round out and has a 13 mm wrench head. We use a extreme NEO magnet to attract any unwanted metal fillings that are floating around in transmission. It comes with a new sealing dead soft aluminum washer. These drain plugs are made in the USA.

https://www.gasgaspartsguy.com/DRAIN...talogId=-15678