Features: _x000D_ 1. Are 22mm door wheel kits designed for halls greenhouses as well as several other models.these are genuine halls greenhouse wheel kits as fitted from new. _x000D_ 2. Sliding free, anti-aging _x000D_ 3. Light weight and easy to recycle _x000D_ 4. Long service life and beautiful appearance, easy to move back and forth by sliding the door roller _x000D_ 5. Quality assurance, easy installation _x000D_ _x000D_ _x000D_ Specification: _x000D_ Condition: brand new _x000D_ Product material: Nylon_x000D_ Size: _x000D_ Door wheel diameter 22mm/0.8inch _x000D_ _x000D_ Package list: _x000D_ 2* plastic parts _x000D_ 2* pulley _x000D_ 2* nut _x000D_ 2* gasket 11.Hese are 22mm door wheel kits designed for halls greenhouses as well as several other models.these are genuine halls greenhouse wheel kits as fitted from new. 22.Sliding free, anti?aging 33.Light weight and easy to recycle 44.Long service life and beautiful appearance, easy to move back and forth by sliding the door roller 55.Quality assurance, easy installation