Total size including 160mm handle. Width of metal tool 10mm tapered down to 2 mm.Carbon steel is the best steel for this work. Sharpen with a stone (we have those listed) more styles of this kind of tool. Check out our other ads that we have hundreds of problems finding hand tools. Proops brothers ltd have been at the service of this industry for more than 80 years. We suggest that no freepost chicane return via our freepost address.