Sound Modification Unit A Improved Version ver2 Thank you for your positive reviews and repeat purchases, as well as for purchasing Yaen (squid catching devices). This sound-producing part is an original, unlike any other, that I created with the buyer's perspective in mind. Good parts produce good sound quality from the initial movement even with weak tension. As a Yaen creator, I have improved and manufactured this part, and I have repeated actual fishing tests, so it is safe for long-term use. Loud sounds can give squid a sense of discomfort from the sound of the line, and strong tension can quickly wear out the core of the part, which has many disadvantages. Please take a good look at the differences in the springs, etc. Production labor + material costs = buyer's perspective = I am listing at a reasonable price, considering various factors. If you remove the spring from the 5-pin photo, it becomes difficult to attach and tends to stretch and come off, so I'm including two spare tubes as a bonus. If you use them instead of the spring, you can easily remove and reattach it many times. (Compatible models) 13, 17 BB-X Hyper Force 11, 16, 23 BB-X Despina, Larissa 11, 13, 16 Exsence LB 12, 18 BB-X Remare (Compact type not compatible) Photo 4. Sound measurement MAX 81.6dB. It can be heard even from a distance, but there may be some sound errors. Please understand that we will test the sound and ship it. For more information, search for "Reel sound modification" on YouTube, and you should be able to understand it almost completely. Please modify the sound at your own risk, understanding the reel structure. New Flip-up Kai K2 Also selling the Hissatsu Yaen Cobra! I will send a comment message soon after purchase, so please be sure to check and reply. Please do so to prevent any trouble.