Black Rubber Bumper Plates Set 150Kg serve several functions when it comes to weight lifting and bodybuilding. You can use Black Rubber Bumper Plates Set 150Kg by themselves to perform a variety of exercises including sit-ups, bent-over rows, squats, lunges and overhead lifts. -Sold Stainless Steel Insert Diameter 2* -Bumper Diameter 450mm IWF Standard -42Crmo alloy steel 2.2m, Handle Diameter 28mm -Includes a Pair of 5/10/15/20/25Kg