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1/4 vs 3/8 vs 1/2 Inch Drive: 450-Piece Socket and Mechanics Tool Set in SAE and Metric - Which Do You Need?
The three drive sizes in this 450-piece kit are not three versions of the same thing - they are three jobs. Quarter inch drive handles interior trim, small brackets and low-torque fasteners where a big ratchet will not fit; three eighth drive is the everyday size under the hood and around the house; half inch drive is what you use when fasteners are really tight, such as suspension bolts and wheel nuts. Because the set covers both SAE and metric in deep and standard sockets, you do not have to buy two kits to work on an older domestic vehicle and a newer import. A 450-piece kit also means a lot of the count is small bits and duplicates, so check the listing for which ratchets, extensions and adapters are included for each drive size rather than counting pieces. Confirm impact rating before using any of it with a power tool.