The basics Cut perfect circles from 1" to 6" diameters in suitable Cosplay materials. The benefits Center depth indicator shows blade progression for suitable material thickness up to 1/2". The uses Features dual inch/metric rail, centering pin, magnetic blade slot and clear acrylic safety dome. The bottom line Always use scrap foamboard underlayment for best results. The circle cutter includes five blades. Use replacement blades XA-5 or XA-20.