Features: Y-shaped top bolt for the staircase fence provide stable support and ensures safety of children. Y-shaped design, equipped with nut, easy to install, and full of durability. Quality, nonslip, durability and long time use. Suitable for families with little children, great for users who need to install safety door guard at stairwells. Widely used in areas such as stairwells and corridors where children need to be prevented from entering accidentially. Specifications: Component: Steel + PVC Rubber Type: Small / Large (optional) Nut Color: refer pictures to selection please Small Size: 6cm/2.36inches Large Size: 95mm/3.74inches (more detail size please refer to pictures) Package Includes: 2Pcs Gate Banister Adapters note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.