I wanted to buy the complete kit, but after reading rather reserved opinion on the magnifying glass, I bought the only pen. I did my first cleaning my D800, yet practically new, which featured dust spots resistant bellows blows of the blower. With much attention, within minutes, I was delighted with the result. The question at the next use, if the pen has not dried or stiffened, at least for the first use, I'm hooked.
