Review on ⏰ JT6336-2 Brass Clock Key Set - SE Universal 4 Prong for Winding Clocks, Odd and Even Numbers (2 PC.) by Jeremy Lunn

This is a good functional wrench set, just enough for the average homeowner or watch repairer. 2 things to warn about: The splines are large enough that you can generate excessive torque when cranking, so don't over-tighten the springs (which you shouldn't be doing anyway). Also note that some older clocks have small ripples in small holes in the dial to adjust speed and silence the chime. These keys are too large in diameter to go through the dial and get to those little spikes. If you only have standard time, gong, wind chimes, you should be fine. If you know someone who has a lathe they can turn out the key barrel so you can get through the smaller holes. The clock I had this problem with was a 1920's New Haven mantel clock. The keys are well made, and God knows our friends in India have mastered the art of making things out of brass, so they'll serve you well.