This double-ended tool’s name is derived from the thin flat ribbon-like stainless steel used to form sharp cutting heads that can cut, shape and slice clay. Brass ferruled ends hold the cutting heads firmly in a hardwood handle, which is tapered in shape for easy manipulation and control. The medium duty 8 in. Set contains tools no. 8R1, no. 8R2 no. 8R3, no. 8R4, and no. 8R5. The light duty 6 in. Set contains tools no. R1, no. R2, no. R3, no. R4, and no. R5.