One new EPC brand 25.40mm clutch slave cylinder (made in Italy), part number CSC4223, 60516270, 60516271, 60716270, 105 1212 05000, 105 1212 05001, 105 481205 000, 072-8314. This fits:
Alfa Romeo Spider, GTV, Berlina, GT Veloce 1969 - 1994
This can also be used on GTV-6 and Milano but you must use your old push rod