You can use the nut and bolt kit that is rust-proof, long-lasting and sturdy for most aluminum-frame greenhouses. Simply insert bolt into the groove of the glass strip and lock it firmly in place when tightening the nut, which is easy to install. Made of aluminium, the nut and bolt are rust-proof and hard. A set of product includes 50pcs nuts and 50pcs bolts. It is a practical tools for glasshouse, greenhouse, garden, courtyard, etc. Item Name: Nut Bolt Kit Material: Aluminium Features: Rust-Proof, High Hardness, Anti-Deform Size Details: Nut Diameter: 1cm/0.39" (Approx.) Bolt: 1.5cm x 1cm x 0.5cm/0.59" x 0.39" x 0.2" (Approx.) Notes: The quantity is about 50pcs , due to manual calculation, the quantity might has 1-3pcs more or less, hope you can understand, thank you. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 50 x Nuts 50 x Bolts