Features: Drop tested over 10,000 times (10kg - 25kg only: 5kg used for weight adjustment only All plates are 450mm in diameter with a 50.4 bore hole Calibrated within 2% of specified weight A high performance and economical bumper plate for any training facilit. Quality engineering with a durable smooth black finish, consistent dead bounce and stainless steel insert 400kg set includes - 4x 25kg, 6x 20kg, 6x 15kg, 6x 10kg, 6x 5kg 800kg set includes - 10x 25kg, 10x 20kg, 12x 15kg, 12x 10kg, 10x 5kg