Tenma Insertable Casters 30 with Stopper, White, Set of 2 (1 opened)

This is a set of two Insertable Casters 30 (with stopper) - White from Tenma (TENMA).

I purchased these on Amazon last week, but my home storage cases are not compatible with casters, so I couldn't insert them into my furniture. Therefore, I am listing them for sale.

■Product Condition
?Out of the two casters, one was opened to check the size. It was only attempted to be inserted and has never been used. It is an unused item.
?The other caster is completely unopened and unused.
*Although the opened caster was not taken outside or rolled on the floor, please only purchase if you understand that it has been handled by a person once.

■Product Details (Official Size)
?Color: White
?Width 3.3 x Depth 4.5 x Height 6.3 cm
?With stopper function
?Insertable type (Please note that this is not an adhesive type)
*Can be used with compatible storage cases such as Tenma's Fits series. Please check in advance if your storage case has an insertion slot.

■Shipping Method
Shipping is included (seller pays).
Due to their thickness, they will be shipped via standard mail or YuYu Mercari便 (YuPacket Post), etc.

It would be a waste to dispose of them, so I would be happy if someone could use them. Thank you.