The Olfa cutter L5-AL is a sturdy cutting tool that has a rubber-like Soft-Grip layer that makes it non-slip and secure in your hand. The blade can be quickly removed and replaced with one hand because there is no loosening and tightening of the locking screw necessary. The easy-to-use feed mechanism locks the blade so securely in place that even when cutting really thick materials it will not budge. What makes this version special, however, is the slightly angled, hard metal “shark fin” (pick) at the back of the housing. This contrivance can do the work of many tools – you can use it to open the top of a tin can or a beer bottle or, for example, as a means of making grooves or folds in such materials as carpeting or corrugated board in order to facilitate cutting them or making a clean fold.