Deck filler key in brass, part of our budget range designed especially for Narrowboats. The deck filler key is cast in brass and measures 45mm by 33mm. The key is suitable for all slotted deck fillers and pump out sockets, including: N-72002, N-72003, N-72010, N-72011, N-72012, N-72020, N-72027 and N-72028.