Thanks to hauck Y spindle you can attach the hauck safety gates Open'n Stop, Wood Lock, and Close'n Stop to stair railings with round or oval bars with a diameter of max. 10 cm. This is also possible when these safety gates have already been extended with one or two extensions of 9 cm and/or 21 cm. The Y spindles have a screw lenght of 11 cm and are to be turned onto the safety gate (2 pieces per package). FEATURES: Y adapter for hauck safety gates For round stair railings Combinable with extensions of 9 cm and / or 21 cm For Autoclose'n Stop, Close'n Stop, Open'n Stop and Wood Lock Safety Gate Easy assembly - no drilling necessary