The present specification relates to a syringe comprising a barrel, a plunger moveably arranged within said barrel and a plunger rod for driving said plunger. A first engagement member is arranged at the plunger rod, said first engagement member comprising a grooved surface. A second engagement member is arranged at the barrel to engage with said grooved surface of the first engagement member such that feedback is given to a user as the plunger rod is moved relative to the barrel for driving said plunger. The first engagement member is arranged at said plunger rod with a predetermined play there between.