Instruct: Classify the given Amazon review into its appropriate rating category
Query: Takes some getting used too.

Wheels/Valve for air compressor are my favorite features. I am a senior female. The wheels are essential. I cannot carry the unit around the yard. It works great for me. The air valve is equally as nice. I have a small 3 lb compressor that brings the pressure in the sprayer to 45 very quickly. Really saves a lot of time and effort pumping the pressure up!! The cap on the tank was almost impossible to loosen the first time I used the sprayer. I sprayed the threads on the tank with Wd-40, made sure it coated the area of the threads and removed the excess with paper towels. Loosening the cap is now not a problem. I am now very happy with the sprayer.