Spta Polishing Pad Set. （2Pcs/5Pcs）SPTA 3"/5"/6" Fast Microfiber Polishing For DA/RO Car Polisher. ✔Perfectly work with SPTA DA and RO polisher. SPTA -The Future of Tools. We have our professional products monitoring team to focus on every single detail that matters to you and develop well-made, portable, exquisite products.