Description: Made of nice rubber material with nice insulation, flexibility and durability;The O-ring design is easy to install, is used to pass wires and cables, and may protect wires and harnesses when passing via sheet metal, firewall and truck chassis. Widely utilized in every single day use, similar to pipeline, machinery, hydraulic, pneumatic, sanitary repairs, sealing on cars or within the garden, workshop etc.The equipment includes eight total specifications, length range: 3-20mm, many specifications to meet different requirements;Keeps neatly in a plastic field and has a specification label for easy retrieval and carrying.Specifications:3 to 7mm-40 pieces5 to 8mm-40 pieces6 to 10mm-40 pieces8 to 12mm-30 pieces10 to 13mm-20 pieces12 to 16mm-10 pieces16 to 22mm-10 pieces20 to 22mm-10 piecesNOTICE:Due to the several video display and light effect, the actual shade of the article is probably slightly diversified from the colour showed at the pictures. Thank you!Please allow slight measuring deviation due to manual measurement.