I still have one of the first Olfa 45mm rotary cutters. It is much sturdier and heavier then the same brand ones made now. The screw is metal and the washer is heavier metal too. I think I paid about $12 for it. Expensive back then! I bought a mat and long ruler, the only brand there were but forgot which one at Hancock's Fabric store. The manager told me the rotary cutter was not worth investing in as the blades got dull. LOL