Day 2 Holley Wood Fiber Angled Base plate Gaskets?

[XXXGoldL34M20]

$35 for the pair with FREE Shipping.
I have never seen these before.
Chime in if you know exactly what application or usage these are for.
Each gasket has an angled base made out of a wooden fiber and are in Excellent condition.
IMO looks like it fits Holley carbs.

*UPDATE* >> PHENOLIC RESIN is the gasket material which has a thermal conductivity rating of 2.01. While not as good an insulator as wood, it is far more resistant to fuel and chemicals, making a resin spacer more durable.