A great all rounder durable design quantum ii technology the inside of the cake pan measures 18cm'. '.strtoupper('i')ncluding the lip on the outside of the pan it measures 20cm discover other products from this award winning collection 20 year guarantee and 5 year non stick guarantee dishwasher safe the master class non stick loose base deep cake pan is the ultimate all rounder for your baking needs'. '.strtoupper('i')ts durable design guarantees long lasting performance, while the quantum ii technology ensures exceptional non stick properties'. '.strtoupper('a')s part of an award winning collection, this cake pan is a testament to master class's commitment to quality'. '.strtoupper('w')ith a 20 year guarantee and a 5 year non stick guarantee, you can rely on its superior performance for years to come'. '.strtoupper('p')lus, it's dishwasher safe for hassle free cleanup'. '.strtoupper('d')iscover the possibilities and unlock your baking potential with master class.