Package contents: you will receive 50 pack glass retainer clips kit, including 50 pieces of glass panel retainer clips and 50 pieces of screws in this package, sufficient quantity and considerate assembly to meet your different daily needs Durable material: these glass panel retainer clips are made of plastic and the screws are made of metal which is durable and sturdy, not easy to break and lightweight for you to use, very practical and will make your life more convenient Widely applicable: the plastic retainer clip kit are mainly applied to attach screens to glass, windows, mirrors, glass door, cabinet door openings, wide range of usages and good helper in your daily life Easy to use: you just need to drill some holes on cabinets or doors where as you want, then fix the glass and clips, drill several holes on walls, cabinets or doors at proper positions, fasten the screws, easy and convenient for you to install; Try to avoid screwing in the screw and then pulling it out, as this may cause the screw to break Measurement: the glass panel retainer clip is approx. 25 mm/ 0.98 inches in length, available in 4 mm/ 0.16 inches offsets, for more size details, please refer to the picture before your choosing