This set contains 4 colourful assorted sizes of spring links which are manufactured from aluminium. They are extremely useful for a variety of purposes but are only suitable for lightweight use & should not be used for any heavy duty work including climbing. Approx Sizes: 60 x 30mm, 55 x 28mm, 42 x 22mm, 32 x 21mm. Product Features: - 4 pack multiple sizes - Ideal for multiple uses - Not Suitable for Climbing or Heavy duty Using