The Hornby S9503 Drawbar is a spare part specifically designed for the R154 4-6-0 N15 Sir Dinadan locomotive, part of the King Arthur class. Made of black plastic and in a scale of 1:76, this drawbar is compatible with Hornby brand locomotives in OO gauge. Manufactured in the United Kingdom, this drawbar is a crucial component for collectors and enthusiasts looking to complete or repair their model railway set.