This is an original extension. The price has been increased due to specification changes. 《The screw part has been changed to aluminum, which significantly increases the strength compared to previous versions.》 This is an extension for MEZZ cues. ※Some KONLLEN cues may be compatible with the MEZZ extension. It can be used without modification, just by removing the butt bumper. It can be installed in the same way as the MEZZ extender. MEZZ extenders can be attached. Also, by attaching a MEZZ bumper, various extensions can be attached. Length: Approximately 1 inch Weight: 28.7g ⚠️ Cue and genuine MEZZ butt bumper are not included. If you wish to purchase multiple items from my listings, please leave a comment, and I will discount the shipping cost. This is handmade, so please purchase if you don't mind minor imperfections. Please feel free to ask if you have any questions. I will try to respond as quickly as possible, but please understand if there is a delay due to work or other circumstances.