Autofiber [Saver Block & Refill] Coating Applicator Foam Block with Side Velcro and Refill Saver Sheets with Barrier Layer (3.5 in. x 2 in. x 1 in.) Green/Gray - 12 Pack

I'm a detailer and I've been applying ceramic coatings for a minute now and this is hands down the best applicator I've ever used the velcro holds applicator in place while the rubber or whatever is layered inside it keeps the ceramic from soaking into the sponge great product would recommend to any detailer ohh and don't be sleeping on the scrub ninjas they make they are game changers