The CS451 needs no real introduction other than by stating that it is THE No.1 selling floor saw of its type/class.

The compact size, ease of use, manoeuvrability and high power to size/weight ratio of the CS451 makes it an ideal saw for small road repair jobs, patching, reinstatement work, cutting trenches for pipe laying, making expansion joints in concrete floors, cutting out channels for impedance loops or cable laying etc, and can be used with either 14″/350mm, 16″/400mm or 18″/450mm diameter diamond blades  

The CS451 is suitable for use with 14″/350mm and 18″/450mm dia. diamond blades, and is indeed probably the most commonly used and specified floor saw in the industry with a 14″ diameter blade mounted.