【Reliable and Solid】The heavy duty Loop style spring loaded barrel bolts are made of High-strength steel. The thickened diameter means it won't bend due to external forces. 【Great for Indoors or Outdoors】They are durable and sturdy heavy duty door bolts which are secure enough. Barrel bolts finished to be zinc coated which could help resist rust, also could work well indoors or outdoors. 【Ensure Safety】The loop style spring barrel bolts preventing strangers or beast trying to get into your private area or keeping your pets and children from going out. Durable and sturdy barrel bolt will not deform or fall off. 【Extensive Use】Loop style spring locking barrel bolts are great for shed doors, gate, barn doors, playhouse doors, wooden window, chicken coops or any other building project. Typically installed with one barrel bolt at the top of the door, and another at the bottom. 【Easy to Install】Loop style spring loaded barrel bolts are comparatively easy to install and retract to open the door. Can be used by one-hand applications. Package includes One Pair of loop style spring barrel bolts and 8 screws. Loop Style Spring Locking Barrel Bolts for sheds, gates, doors.