Good spring action:This greenhouse clamps has a thick spring,which has good spring action and can be adapted to most different sizes of poles,stands or hoops.Esey to open and strong.These garden clips have a strong grip and will not disintegrate like plastic. Multi-use product: These clips strong enough to hold down the netting on your raised garden beds or row cover on your garden hoops when it's a windy day.They will be helpful to anyone who wants them for garden use.Aside from garden use,they make great food bag closure clips,clothespins,binder clips,photo clips,cord clips for hanging up string lights,etc. Durable material:These greenhouse clips are made of stainless steel(Note:The spring part is not stainless steel) ,sturdy and durable.They are more durable than the wood clips or plastic clips.The clips snapped on easily and held the frost blankets and greenhouse cover in place through high winds and heavy snow. Note: Data are all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be some color difference, depending on the physical object received.