All my Craftsman SAE sockets have grooves and my Metric have a knurl.
You are talking a about a basic socket and wrench set, the overall design was perfected about 40 years ago. Modern manufacturing ensures a accurate dimensions regardless of manufacturer.
No they don't, these big cheap kits are as basic as a socket can be, tolerances are low and it only got rolled print at base, no knurl, no grooves .
It ok for a diy home kit but for someone with a big tool box and looking at more mechanical usage way better can be had from the start if throw in another 100bucks .
Don't get tied down by brand images and how things use to be and buy tools based on good current feedback and personal opinion from actually inspecting them rather than assumption of what they going be . Other thing is only buy design criteria that really needed and better at that price range, example being ratchet tooth counts, 72T taiwan 2 pawl designs are solid performers, well tested and cheap, 84T gearwrench is solid and cheap when buy 3pc ratchet set. No need go 90T (current mainstream taiwan 90T is junk) and the 120XP is not that great or worth the extra premium unless 3deg a must criteria for you .
Sunex impacts are a steal and perfect way get decent sockets that likely last a weekend guy his whole life unless looses them ... For someone who hardly uses them the HF taiwan impacts will get you by .
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