The BFE1400 is the most used size and is perfect for slicing through wide bands of urethane. It works well in all plcaes where you need to plunge cut or angle cut.
10" Equalizer Express Windshield Urethane Cut Out Blade BFE1400 - Automotive
Equalizer Express Windshield Kit 120V LDT204 Bundled 3" x 10" HydroBlade EHB186
Equalizer Express Blade for Windshield cutting Urethane 1.5 in x 10 in BFE1401