Moulded heater hose shaped to suit the earlier heater unit as found in Roundtail Spiders, Sprint GT & GTVs and Giulia Saloons up to about 1968. Specifications changed at different times on different models, so you need to check what your car is fitted with to make sure you order the right part. The later style hose is available under item WA018/S.
If you replace the heater hose, also check the gromment where the hose passes through the firewall. It is available under item RB059. Two required per car. Also straight lengths of heater hose are available under item WA048/S.