I designed this to replace the plastic lock mechanism cam in the back of a Lista brand cabinet. Lista apparently doesn't carry these replacement parts (as of this writing, Aug 2016). But Lista does make great quality heavy duty storage cabinets, and there are probably many older ones out there on the used market. The original part was some kind of white plastic. It had the part number x2423 molded on the backside. The replacement part I designed with thicker sections to be sturdier. The replacement part should fit the 0.240" square shaft lista uses on their lock mechanisms. It's held on with a #6 set screw, or you could glue it on like Lista did. I printed this part on a Makerbot in PLA. It took a few iterations to get the fit right. Please let me know if you purchase this and it doesn't quite fit for you. I may need to tweak a few dimensions so that it prints right on the Shapeways printers.