M12 x 1.5mm
Mess free oil change, change oil with the bike on its side stand and pointing slightly uphill so the oil in the oil filter drains back into the engine so when you take it off it doesn't drip over the floor
well worth the money, takes a while for the oil to drain but it does drain and doesn't make a mess on the driveway and you don't need loads of newspaper down on the floor either.
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