Material and SizeOur threaded spindle rods with core screw made of steel and ABS plastic, durable and reusable. Strong material that will not crack from pressure, help make the Banisteria door, well body and solid, so as to keep children or pets safe. Package includes 4 4-pack threaded spindle rods. Size: diameter M10 (10mm), length 80mm. Protection and stability Make your baby gates more stable and not fail. Great way to protect the wall or your stair benches. Rubber Ends To prevent your stairs from scratching, you can mount a baby safety gate on the stairs against a baluster, round pole.Protect your baby and your pet. Easy to InstallOur pressure screws for pressure mounted pressure gates can be easily install in your baby or pet gates without any tools. Don't need to make a hole in the wall, just rotate the nut and create a reverse force against the wall, quick and easy to adapt. Wide application This adapter replacement kit is suitable for most security doors and most banisters. Ideal for baby gates, pet gates, stair gate, child gate, wooden stair gate etc. Meet your multiple needs. Warm ReminderThis baby gate extender fit only for M10 pin hole, not for other sizes screws, please check the pin hole of your baby carrier PRESS. Quantity: 4 pieces Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect due to the differences between different monitors, the picture may not reflect the actual color of the item. . due to manual measurement. Please allow deviation. THANKS!