>>1184106not him but what you need will be a prong-shaped tool except the pins on a pin spanner fit into round holes and your bb has flat, open-ended spaces so the fittings will look more like thick-assed screwdriver blades. not sure if there's a name for it or it's proprietary or what. but the tool will overall look like a prong shaped pin spanner.
that sickle-shaped one is for the old-style lockrings pic related