We have this riving knife Fiskars fetched, because we had to split many logs lately that had more than 35cm diameter, very verastet and were thoroughly dried. Again and again were that the process which could harm Spaltaxt little or nothing. It was a miserable drudgery. After reading some of the reviews and in various forums we opted for the wedge of Fiskars. Today we tried it and love it. With him we were able to split wood that has absolutely resisted the log splitter and was once came on the side. Over vera constant crown parts could share wonderful. Here one notices clearly the advantage by the torsion. Out of sheer joy over the good functionality we split the whole lunch timber - which says it all already. We are excited in any case and would buy us these wedge again!