These are (3) different valve seats. Starting from the left these (7) seats measure 37.67mm OD X 8.9mm wide. The middle seat (1) has the same OD as the other 7 but has a thinner wall, the (3) seats on the right measure 41.58mm OD X 8.9mm wide. I don't want to sell these seats separately. The shipping and the PayPal fee is included in the USA.
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