Based on the new regulation since 1st of June 2016, interlink rail is required for all types of glass balustrade. At Grand Glass, we stock three types of interlink rails: Top Capping Rail, Round Offset Rail and Slim Offset Rail.
For Round Offset Rail System, please click the link: http://www.grandglass.co.nz/product-detail/round-offset-rail-system/
For Slim Offset Rail System, please click the link: http://www.grandglass.co.nz/product-detail/slim-offset-rail-system/
Pictures above shows you the Top Capping Rail System with 316 S/S slotted tube(38mm or 50.8mm diametre). This type will provide extra secure and tidy look for your glass balustrade. Meanwhile, a complete range of connectors for corners and ends of rail are available.
Please click the linf for price guide : Detailed Interlink Rail Price Guide