These are the tools you'll need to assemble your frame. Actually you only need the bottom three - and of those only the 1/2" open end / box end wrench and the 1/2" nut driver are critical. The 1/2" socket drive is more a convenience. The phillips head and flat head screwdrivers are used to adjust the oar sleeves and oar rights on the oars. On any float you'll want to have at minimum the 1/2" open end / box end wrench, the 1/2" nut-driver and the two screw drivers. That should cover any adjustment needs. All the nuts and hex head screws on the cataraft frame are 1/2" size.