Radar Three60 Disc>Radars 42 circle of fun will keep you entertained for hours on the water Radar Three60 Disc Radars 42 circle of fun will keep you entertained for hours on the water. This round ripper is a blast on the water. Radars plastic base allows it to carry speed like no other and its foam core gives it loads of stability. Throw the kids on the Three60 this summer and theyll keep themselves entertained for hours. Fun on the water doesnt always mean one foot in