Features: The open end of Sidchrome spanners up to 32mm or 1 1/4" feature the revolutionary and unique "AntiSlip Design" - or ASD. ; ASD features a locking groove and unique geometry, to deliver 400% more surface area than a conventional spanner. ; This delivers greater torque to the fastener, significantly reduces the chance of dangerous slipping and allows the job to be completed faster. ; Sidchrome spanners are manufactured to meet or exceed relevant ASME and DIN international quality standards. ; You can be sure Sidchrome spanners are tough enough to stand up to the harshest working environment. ; Specifications:Part NoSCMT20706Size18 X 19mm