5/8 Inch Precision Chrome Steel Bearing Balls G25 30 Pack 22mmx48mmx2m Mounting screws are included

Mounting screws are included

air exchange fan

If everything is normal

mushroom shape

This corrugated tube is made of PVC

5/8 Inch Precision Chrome Steel Bearing Balls G25 30 Pack 22mmx48mmx2m Mounting screws are includedThe finest quality chrome steel produced in accordance with the highest industry standards. Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for casters, drawer slides, door locks and many other applications. Suitable for a range of purposes, some of the most common are listed below: 1 8" is often used for clusters and old Eglish style headsets 1 4" is often used for rear wheels and bottom