A replacement elevator gust lock.  Material is nylon / glass fiber plastic (upgraded in 2024).  The existing model measurement data for your aircraft will used for the replacement part.   The elevator gust lock fit should be a slightly loose fit by approximatley .010 - .020 inch to insure it is relatively stress free in the fitted condition.  A light coat of enamel paint on the elevator gust lock upper surface works well to improve visibility.