Jutsu is designed to meet the need for players who throw from the very front of a dart barrel. Just behind this dart's nose is a very focussed grip; it's also where the push point sits. Front dart throwers can take their fingers up to the very tip, and still get a very controlled throw and the increased grip will aid this.
Wide rings make up the remainder of the Jutsu dart design; the hard-wearing square grooves placed just inside each ring provide the 4/5 grip level and an assured "bite". Zen Jutsu can be thrown from the back or centre also, if you prefer heavy front weighted dart.