This is a spacer for the Ergotron LX connection. Originally designed and manufactured for personal use, I am offering it for sale in the hope that it will be useful to others with similar needs. 【Product Features】 ・Compatible with models where the male connection is 35mm in diameter. ・Printed using a Bambu Lab 3D printer. ・Made of ABS resin for excellent strength and durability. ・Compatible with Ergotron LX and Amazon Basics monitor arms, which are OEM versions of the Ergotron LX. 【Installation Instructions】 ・Install the spacer between the male and female connection points of the monitor arm. ・We recommend securing it with double-sided tape or similar if necessary. 【Important Notes】 ・This listing is for one 3D printed item. ・Photos 1-2 show a comparison with the original product. Please note that the original product is not included. ・This product is 3D printed, so layer lines may be visible. ・Excessive force may cause damage or deformation. Please avoid applying unexpected force, such as trying to force it open. 【For Multiple Items】 Additional items are available for 1,000 yen each. If you would like to purchase more than one, please let me know in the comments section before purchasing, and I will create a dedicated page for you. Thank you very much for reading. I hope this product will be useful to you. We look forward to your purchase.