The Rebel Commercial Fitness Colour Bumper Plates are our bestselling Olympic disc and exhibit the Primal Strength Logo and ‘Slashes’ running through the centre of the discs. The bumpers are aesthetically superb and will add to the look of any premium gym or sports facility. They have IWF 450mm diameters as standard and are tolerance tested to under 2% of the displayed weight.The Olympic Bumper Discs have smooth, brushed-steel centres with rounded edges, allowing discs to easily slide on and off the Olympic bars without damaging the sleeves. The rounded centres protect the integrity of the discs, even when dropped. The premium virgin rubber is completely odourless and has been thoroughly drop-tested..BUMPER THICKNESS: 5KG Plate: 2.6cm10KG Plate: 4.5cm15KG Plate: 6.7cm20KG Plate: 8.3cm25KG Plate: 8.9cmThe range comes colour-coded in traditional Olympic colours with weights as follows: Grey (5kg), Green (10kg), Yellow (15kg), Blue (20kg) and Red (25kg). The Rebel Commercial Fitness Elite Colour Bumper Plates can be used with any Olympic bar. Whilst the discs are extremely heavy duty and warrantied for Cross Fit boxes, we recommend the Nero Grain Bumpers for repeated, overhead drops as the grain rubber has a higher bounce to protect the bars and flooring.The Two-year warranty applies to full commercial gyms and cross fit boxes for indoor use only.