Land Rover Defender ,Discovery ,300tdi viscous coupling flange made from Bright Steel Billet 605M36T, this is a very tough steel cnc machined as a full round ,(with no ears to snap off ) and the precise machining ensures your original bolts will fit as intended. This is an interference press fit part and would benefit from warming with a hot air gun to , too hot to handle but no hotter please. Regards Dave. NB . Pulley not included. New batch price reduction and free postage