4.3kg training equipment with variable resistance function. The Burn Machine. - Model Name: Grit Machine - Weight: 4.3kg - Adjustment: Variable resistance function - Design: Circular design Thank you for viewing. Suitable for training arms, abs, back muscles, pectoral muscles, etc. in a short amount of time. You can adjust the load by turning the center part. Search for "Grit Machine" on YouTube. Only those who understand that this is a used item, please.