Features : 1)Left Cap for 18mm Roller Blind 2)material: iron,painting 3)size: for 18mm tube 4)the bead chain :4.5*6mm Features:1) little noise and easy to pull2) Available for 18mm roller blind 3) Description: right bracket 4) material: iron,painting5)size:for 18 mm tube6) bead chain: 4.5*6mm