1.Package Contents: 4 x carabiner hooks,3.93inch(10x10mm). 2.Premium Quality: Our 4 inch snap hook carabiner is made of premium quality 304 stainless steel.They have smooth surface.And 304 stainless steel are not only can protect against corrosion but also extra sturdy. 3.Easy Installation:The snap hook carabiner is super easy to use,carabiner snap link spring gate opens and closes easily and smoothly for making quick connections.You can install wherever you want to install accessories. 4.Loading Capacity:Spring snap hook stainless limit load capacity is 650Lbs/295kg.Versatile binding, rigging & anchoring hardware - quick connect/ dis-connect of ropes, chains, straps. 5.Widely Used in Outdoor& Indoor:Our snap hooks is perfect for indoor/outdoor. It can be used in many ways such as climbing ropes connected,boating,sailing,camping,fishing,hiking,travelling,home gym,weight lifting machine, and various. Large carabiner is widely used in wherever.