DLLM E321 Unused Code End Stopper This is a code end for 4mm rubber cords. Purchased for 4mm bungee cord rubber (see 4th photo). The core is strong, so the attachment is tight, but it could be clamped. 5th photo: DLLM rubber cord, 3mm rubber. Can be attached. 6th photo: Daiso 4mm rubber. A little loose. Three types of sample rubber cords are included. I will sell it to those who need it. There were no problems during the actual installation. No claims, no returns, please.