I work among others as a personal trainer and used to think: why is there dumbbells with 0.75kg? 1kg can each cope with yet. But I have found that offer just in intense, rapid muscular endurance movements, which can be very stressful even with your own body weight over time (BSWP. Butterfly reverse at high speed), especially dumbbells with small weights a high added value. This dumbbells are excellent in hand, the neoprene coating a quality image. The grip width, however, is more suitable for women because quite narrow. On the other hand, I rarely see men with gymnastic dumbbells work.
Anyone who wants to find exactly what the grip width is about 8.5cm - anyone can measure it myself if the weights are suitable for him. I for one will know how to use them.