除了3000系列外，每個沖片罐底部都有連接磁鐵的卡榫。

original JOBO
+transform your inversion tank into a rotary tank!

• The magnet upgrades all inversion tanks to rotary tanks. All tanks and drums (except the 3000 system and Expert) have holiding pins on the bottom to which the magnet is attached.
• Just keep development going