PRECISION RESIZING: Easily "dial-a-size" for optimal ring resizing, making the process streamlined and accurate. STURDY DESIGN: Heavy-weighted base guarantees stability; pre-drilled holes ensure easy workbench mounting. OPTIMAL DIMENSIONS: Measures 5" x 7-1/2" x 17" (12.7 cm x 19.05 cm x 43.18 cm) – designed for proficient and reliable ring adjustments. PLAIN BAND FOCUS: Primarily effective on plain bands, ensuring perfect resizing without causing damage. DURABLE CONSTRUCTION: Built for heavy-duty capacity, this bench tool is crafted for longevity and repeated use. BENCH WIZARD Professional Jeweler's Ring Stretcher and Reducer. This unique tool is not only robust, but it's also precision-engineered for effectiveness and efficiency. With its heavy weighted base, stability is guaranteed, ensuring accurate size adjustments every time. The unit is equipped with pre-drilled holes, making it effortless to secure to your workbench. Its user-friendly "dial-a-size" mechanism simplifies the resizing process. Just position the ring correctly, and with a swift move of the lever, gradually achieve the desired ring size. Measuring 5" x 7-1/2" x 17" (12.7 cm x 19.05 cm x 43.18 cm), this solid tool promises unparalleled performance, but it's essential to note its efficacy on plain bands alone, steering clear from stone-set rings.