Sk round heads are top of the line. At least the older models that have been around forever. Haven't looked at their newer stuff. I have the older round heads and they're nice to use and maintenance. I aways look at maintenance as a purchase point since I work around alot of dust sometimes. Some of the round heads from other companies uses a heart spring and those aren't as fun to maintenance, gotta line it up and get it in the right spot or go through all the steps again. Sk is a core with a lever built in, gotta put the selector plate on right which isn't hard to do since it doesn't turn over unless it's in place and it's done. Oiling or greasing can be done without disassembling the core normally too on round heads so there's never a reason to disassemble the core unless it's been sitting and grease is caked up in the selector rod chamber. Only had that happen with an indestro 3/8 though and it's more of an unexplained mystery as to how it even ended up in there. My smallest sk, a 1/4 thumb ratchet with same core as the normal ratchet, had sat for probably as long as indestro has been out of business and was completely seized but once the retaining ring was popped off it was just some scraping, oil, and some teasing before it worked like new. Other sizes only needed scrapped and oiled before they were ready to work again when I got them. For some reason they all came with motor oil and purple metallic paint chips inside. Think the guy used used motor oil that was contaminated with the tiny chips. My preference is chip free but I guess it'd look neater when the ratchet leaks out all over.