We are offering coupler, product descriptionprofessional coupler. Model no: 30-123 1.heavy constructed steel body. 2.high pressure without any deformation hexgonaelbase for proper installation and removal. 3. Available in 3 jaws & 4 jaws. 4. Working pressure recommended 6000 psi. 5. 3 jaws thread: 18 bspt, m10x1.00 & 18npt. 6. 4 jaws thread: 18 bspt, m10x1.0o & 18npt.