1.vinyl/neoprene coated 2.cast iron core 3.smooth fresh color surface, printed logo 4.with anti-slip rubber pad 5.OEM ... Specification:1. size: 4, 6, 10, 12, 14, 16, 20, 24, 28 kg2. vinyl/neoprene coated body ... days after order confirmed7. MOQ: 5000kgs8. prompt delivery 10kg vinyl coated kettlebell with anti-slip rubber pad