Wheel locking caps for 4 mm axle (brass) for D305, D320, D366, D396, D406, D496, D409, D499, D430, A386, A426
Brass fastening cap for the 4 mm axle of the mobile steam engines D305, D320, D366, D396, D406, D409, D430, D496, D499, and the trailers A386, A426.