The Hema 01 90% Swiss from TARGET is a straight model with a ringed grip. The Hema series is silver with red and black rings and has 90% tungsten. Target Hema darts come complete with red Pro Grip shafts short and Hema Vision Ultra Flights. The Hema Darts Series contains Swiss darts. These points can easily be replaced yourself with the Swiss tool. There is also a disadvantage to the Swiss darts, only Swiss darts can be used. This dart set comes in 2 weights; 22-24 grams. 22G = Barrel Length: 54.00mm, Barrel Width 6.30mm. 24G = Barrel Length: 54.00mm, Barrel Width 6.40mm.