6910ZZ Bearing 50x72x12 ShieldedBall Bearings 6910ZZ 50 mmx 72 mm x 12 mm One Bearing One Ball Bearings the inner diameter is 50, outer diameter is 72 and the width is 12, this is a popular size that could be used in many applications, Bearings are made of Chrome Steel, bearing has 2 metal shields to protect the bearing from dust or any possible contamination, also bearings are pre lubricated with grease. Item: Double Shielded Ball Bearings Size: 50mm x 72mm x 12mm Dimensions: