Specification Brand : Hilitand BulletPoint1 : Size: The inner diameter of the bearing is 5mm, the outer diameter is 17mm, and the thickness is 8mm. BulletPoint2 : High efficiency: The roller is a spherical raceway. High-precision processing makes the bearing have less friction, the is polished, smooth, and the working efficiency is high BulletPoint3 : Size: (Inner Diameter x Outer Diameter x Thickness) 5 x 17 x 8mm / 0.2 x 0.67 x 0.31in BulletPoint4 : High quality: The bearing is made of stainless steel bearing steel with good and strength. BulletPoint5 : Application: The bearing is suitable for computer embroidery machine. IncludedComponents : inc ItemName : 10 Pcs SG15 Bearings U Bearing Track Bearing 5 x 17 x 8mm (Single Row Roller) ItemPackageDimensions_Height : 7.4 centimeters ItemPackageDimensions_Length : 1.5 centimeters ItemPackageDimensions_Width : 6.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : deep-groove-ball-bearings Manufacturer : Hilitand Material : Stainless steel bearing PartNumber : Hilitandehnq4b5u7g-01 ProductDescription : Specification: Item Type:Bearing Model:SG15 Bearing Material:Stainless Bearing Steel Size:(Inner Diameter x Outer Diameter x Thickness) 5 x 17 x 8mm / 0.2 x 0.67 x 0.31in Roller Way Type:Spherical Raceway Type:Single Row Roller/Double Row Roller(Optional)