Fly Puck

The dimension are 3�" by 1" (4 oz) or (8 oz). The puck currently has a seam (to join the top and bottom pieces). There is a metal circular piece inside (for the weight). Right now that puck is breakable from the seam and if shot on a vertical wall or hockey goal post. It would be better if it would not brake (no seam) and just a mold around that metal piece or if you could have a plastic heavy enough, we would not need metal inside and that way no seam.