Smoothies are premium metal clay sanding sticks. Use to sand, refine and shape bone dry metal clay and for pre-finishing all types of metal. Cushioned boards in coarse, medium and fine grits for sanding, shaping and smoothing metal clay prior to firing. Smoothies are long lasting. Don't throw them away! Use the Smoothies Brush to clean them and use again and again. Recover valuable silver dust with the Smoothies Brush and the Smoothies Mini Brush. The kit also includes the Smoothies Buff to keep your finished pieces free of tarnish. Just a quick rub with the Smoothies Buff and your polished jewelry will shine and sparkle like new. Smoothies Coarse in 120 grit, Medium 240 grit and Fine 320 grit. Use just as you do wet/dry sand paper and other sanding sticks.