Bilge pump handle

[Sailpirate]

Hello Bavarians,
2000 Bavaria 31, I have lost the manual bilge handle and am looking for replacment. The on deck pump has no external marking therefore I am currently unable to identify which pump is installed without taking it all apart. Measured the pump handle slot diameter, measures 18mm, length up to 350mm would fit, does anyone know the make of pump installed or which handle would fit.
Thanks and safe sailing

[Yngmar]

Should be a Whale Gusher - have a look online if that looks familiar. The handle is just a stainless steel tube with a black ball for a handle. A length of stainless tube will do fine, if you're fancy you can craft a handle on or wrap some rope or rubber around it.