Does what was needed so all good - got the diverter working again
Not sure if this pack of two rubber washers was measured by Stevie Wonder? Either way, as per my title, they are too big! They are not 1" (25mm) they are actually 1" & 1/8th (28mm) and prevented me from finishing a job for 2 days. Cost me more in time lost, petrol and a 6 mile round journey than the 84p of the purchase of the useless rubber washers. You have been warned!
Hole is slightly oversize for the tap it was used on but does the job as it should
no sizes given so had a wasted journey to purchase