Cygolite Flexible Tail Light Mounting Kit Description: Cygolite Flexible Tail Light Mounting Kits replace or supplement mounting brackets used with select Cygolite tail lights. This flexible mount includes a silicone strap capable of securely holding tail lights to various diameters of seatpost. Features: Genuine replacement Cygolite parts Seatpost-mounted flexible mount kit for Cygolite tail lights Flexible silicone strap fits various seatpost diameters