Ideal tool for greenhouse: these greenhouse twist clips are ideal for fixing wires, insulation materials and shadows to aluminum greenhouses, they have corrosion-resistant properties and a long time using life Sufficient quantity: you will receive 100 pieces greenhouse plastic clips and 100 pieces washers, totally 200 pieces, each twist clip is equipped with a washer, suitable for insulation of green netting shading material Easy to use: just simply insert the roof channel and tighten the insulation, you can save time and effort by using our twist clips, the process don't need other tools, these washers can prevent the insulation from tearing Appropriate size: the size of greenhouse fixing clip is approx. 0.78 x 0.78 inch/ 2 x 2 cm in length and width, the size of this washer is approx. 0.98 inch/ 2.5 cm in diameter Reliable material: these greenhouse extender corner clips and washers are made of quality plastic, which is stable, accurate and reliable, it can withstand long-term use