Billet aluminium drain flange. 
Fits the following units:
GT/X2860R, GT/X2871R, GTX2867R, GT/X3071R, GT/X3076R, GT/X3576R, GT/X3582R, GTX3584RS,
G25-550, G25-660, G30-660, G30-770, G30-900, G35-900, G35-1050.
Available with plain (plain fitting is 18mm O.D) or threaded AN10 spigot.
Kit comes with bolts and drain gasket.