Our Roland blades are made here in our facility, using our proprietary US made carbide inserted in a harden steel blank and are polished to a micro fine cutting edge. We make all angles 20, 25, 30 ,45, 60, 65. We also make them with an alternate type of carbide that is harder and is good for abrasive and hard to cut materials. That is designated by M/06 and are shipped in our black containers.