25 Piece Pin Spanner Wrench Set,42CRMO Heat-Treated,Nickel-Plated Finish,Adjustable Spanner Wrench for Bearings,Pulleys & Lock Nuts,Metric & Imperial Precision Pin Wrench,160mm Arms,180° Rotation

Amazon link.These do work, but you’re supposed to use the hex on one side, and the spanner wrench on the other side. Neither side is meant to be done alone, ESPECIALLY if you don’t have the proper tools. You can usually take it off with heat, someone holding an Allen on one side, then hammering it with something that can catch the corners. Still, i recommend using a spanner wrench and hex.