Features: Made from high quality plastic, strong and sturdy enough to bear the weight of your curtains. Easy to Install. Just clip the gliders onto your track. Easy to unclip and take off. Smooth Action. No snagging. No sticking. No effort when opening/closing your curtains. For long lasting, smooth operation of the gliders, we recommend that you apply a small amount of silicon spray on the track before fixing the gliders. This will keep your gliders moving freely from sticking for years to come. Specifications: Quantity: 50 PCS x DECORAIL Curtain Track Glider Hooks. Colour: White. Material: Strong, durable plastic. Dimensions: External Dimensions: 50mm Length, 20mm Width. Safety Warning: Contains small parts. Not suitable for small children under 5 years. For use under adult supervision.