That depends. What's the make/model/year of your frame?

Hard telling. It says 170mm BB recommended, but normal BBs don't get that wide. Could be a typo of 107mm. Unfortunately Origin8's website is kinda borked so I couldn't find info there.

If you're wanting to keep your current BB, but fit a new crank you need to remove the cranks and measure spindle length or remove BB also and look at markings on the BB to determine spindle length, most Shimano BBs from the past 15+ years have a sticker on them indicating spindle length.