They are Compatible with Dreambaby Chelsea, Dawson, and Liberty Security Gates Easily fitted to railings, rungs, and banisters. No tools required for installation,Suitable for the following Dreambaby pressure-mounted Security Gates: #160, #170, #190, #191, #894, #854, #919, #867, #920, #1961, #1962, #1963, #1964,This cost effective pack contains rubber lined Gate Adaptors. Allows you to safely attach gates to railings and balustrades,Rubber lined, metal gate adaptors,4 Count