Description: Made of aluminum material precision hard durable for long time use. Measures: Nut Dia 10mm / 0.39inch; Size:10x15x5mm /0.59x0.39x0.20inch; Used to attach wires staging shelves etc. Fits for most aluminum frame greenhouse. Easily removed used. Simply insert the into the groove of the glass strip tighten the nut and turn it to lock firmly into place. This is a good replacement parts for repair the greenhouse. Specification: Material:Aluminum Package Includes: /100 Set Greenhouse Nuts and s Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors the picture may not reflect the actual color of the item.