Tri-Grip Vinyl Weight Plate 30/31 mmWhat the Tri Grip Weight Plate in Vinyl 1. 25 kg, 2. 5 kg, 5 kg, 10 kg, and 15 kg Weight Plates Can Do Many sports enthusiasts know the problem from their own experience: weights that are designed in such a way that they are difficult to grip during their exercises or even pinch uncomfortably. Especially when it comes to decline crunches with weights, it can feel quite uncomfortable if the weight is difficult to hold. The solution to this is the