extremaratio bf0 r cd kiseninis peilisExtrema Ratio is proud to introduce the new BF0 R CD Simple Folding Knife. This is a small basic knife. Its handle is made of technopolymer, which makes it light and resistant, also thanks to the steel inner frame. The BF0 R CD uses the reliable LINER LOCK blade locking system. It retains all the features of BF0, improved with a new high speed razor type opening system.