The Sand emasculator features a single-crush jaw which brings one central blade between two fixed blades. The action is crushing, not cutting. A handles lock allows the crush pressure to be applied for the required time. The tools above reflect a range of quality. The Shoof tool is satisfactory quality and function, made in Asia. Aesculap is a top-quality German brand. The Chifa tool is precision European Manufacture. All the tools are 31cm long overall. The Chifa tool has offset (angled) handles.