Butterfly Tenergy 05, red, used extra-thick rubber. Purchased new and used for only about two months, from September 27th, 2025 to November 29th. Practice frequency was 3 times a week, for about 2-3 hours each time. After each practice, I took care of it and protected it with a protective sheet. The sheet has deteriorated somewhat, but the rubber is still in usable condition. The racket I used was a Butterfly SK7 Classic. It has a blade size of 157 x 150. Please understand that this is a used item before purchasing. It will be shipped via Yu-Packet Post, which will be sandwiched between cardboard to prevent bending and directly delivered to your mailbox. #2.1