This is an all SAE (inch) service set just as the description says. It is 3/8 drive, has deep 6 point and 12 point, as well as standard depth 12 point, 6 point and universal. Has a 90 tooth ratchet which I provided more details on in my review of the 104 piece set. My biggest complaint is it lacks speed release. This set has no wrenches. It has a speed spinner, I found the speeder to be kinda squeaky and it needed a bit of oil but is well made. Has a breaker bar ratcheting adapter which are kind of uncommon as well as a thumb spinner attachment for the ratchet. Overall quality seems pretty nice. Being all SAE this would be ideal for stuff like lawn equipment which is still predominately SAE, older american cars prior to the mid 1990s, or a lot of in home type uses (for some reason a lot of stuff that is assembled like grills, patio furniture etc. still use SAE). If you have a use for SAE tools its a pretty good overall value. Given the sale price you are almost better off buying the whole set rather than parts, the included ratchet and speed spinner are kind of expensive on their own. This comes out to less than $1 a piece on sale which is cheap considering how well made and finished the set is.