Luminous Sleeves *Parts for fixing shelves to metal racks/steel racks* Model Numbers: "JHT-SLV4S", "IHT+SLV4S" Compatible Pole Diameter: 19mm Quantity: 2 packs of 4 sets each (8 sets total) Condition: Unused These are genuine Luminous sleeves used to fix shelves. They are specifically for 19mm diameter poles and are essential for adjusting shelf height and securing shelves. However, I forgot that they are also included with the separately sold shelves, so I ended up buying them separately. This is a set of two unopened, unused packs. The packaging includes diagrams on how to use them, so even beginners can use them with confidence. I hope someone will take them. ≪Included Items≫ ・Pack of 4 sleeves × 2 (8 sets total) ※As shown in the photos ※Although unused, there may be some minor scratches on the packaging due to storage. ※Please understand this before purchasing.