Impress your customers with the transparent SX-15. The clear head on the SX-15 allows you to show your customers how your professional tools and chemicals remove years of grunge from their tile and grout. Just like the Hydro-Filter, it's a great way to demonstrate how much grime their 'cleaning' left behind. It's also a great visual tool for seeing when you've removed all the cleaning solutions and dirt from an area. If the water isn't brown or foaming, it's clean! - Industry leading 15