Drain Tracing Dyes - For testing and tracing leaks in drains - Blue

My mistake but very misleading photograph of product. Expected 4 different colour drain dyes for the price but ended up with only the blue for £31!!! Would never have brought product for that cost had I realised.

Shows a pack of four dies for £28 when you receive it’s only one blue die could have brought that for£18 I fell for that one didn’t I !!!!