The Marcy Cast Iron Vinyl Dipped 6 kg kettlebell is made from cast iron, which makes it very durable training tool. It can be used for building core strength and muscle mass as well as in strength, endurance and body shaping workouts. The displaced centre of gravity in the kettlebell makes it harder to control than dumbbells and thus improve coordination and stability. The vinyl coating and rubber mat at the bottom protect the floor and kettlebell surface from scratching. The handle is large enough for dual handed grip. Lack of coating on the handle also makes the grip safe and prevents slipping.