Weight of vertical blinds: each measuring 89 x 50 mm. Lower quality weights are used to replace worn, fragile or missing weights etc.Bead Chain for Roller Blinds: 10m vertical chain for blinds, includes 12 balls between each clip of the chain ; ideal for the 89mm slats of vertical blinds and perfectly adaptable.Quality materials and durability: made of high quality solid plastic, which is hard-wearing, firm and reliable and can be used for a long time. They are great replacement accessories that save money.Easy installation: from the front panels, hook the ball chain to the lower weights of each panel, then attach the rear part in the same way. No tools needed for installation.Wide Application: The vertical blind weights and chain are suitable for all kinds of louver blinds and vertical roller shutters. They can be widely used in living room, bedroom, bathroom, kitchen, dining room, office, etc.