CFF 12 kg Pro Competition Russian Kettlebell (Girya) Great for Cross Training and MMA Training! CFF 12 kg Pro Competition Russian Kettlebell Girya 100-Percent All steel construction (Not cast iron) Regulation 33mm handle; The handles are specifically designed to prevent lateral slipping and minimize fatigue with high repetition sets Flat bottom (Perfect for renegade rows w/no wobbling) Other sizes available: 8, 12, 16, 20, 24, & 32 kg kettlebells