We're releasing a combination set that many customers have requested: 40 deadening sheets, 4 medium-sized sound-absorbing materials, and 2 small-sized sound-absorbing materials! Want to properly deaden your front doors? Worried about the number of sheets needed for a medium to large-sized car? We recommend this set over Deadening Kit A. ・Vibration Dampening Material: 10cm x 5cm, 40 sheets ・Sound-Absorbing Material: 10cm x 10cm, 4 sheets 10cm x 5cm, 2 sheets By applying the vibration dampening material and sound-absorbing material together, you can dramatically enhance the deadening effect. 【Vibration Dampening Material】 It's an adhesive butyl tape, so you can use it immediately after peeling off the backing paper. Vibration dampening sheets absorb vibrational energy and significantly reduce the transmission of sound and vibration. By applying them to vibrating parts such as metal or resin surfaces, which are the source of the problem, you can significantly reduce unpleasant noises like "rattling" and "warping" sounds. It's an adhesive type, so no glue is needed. Easy to process. Recommended for preventing rattling sounds behind speakers, inside doors, and in the trunk. Also recommended for those who are about to try deadening for the first time. Large size, so you can cut it to fit the area you want to use it on. Easy to cut with scissors. 【Sound-Absorbing Material】 Absorbs noise and improves the quietness of the car interior. Effective when applied to the outer panel behind the speaker or other door panels. Combining this sound-absorbing material with the vibration dampening sheets can provide even greater soundproofing effects. This can also be easily cut with scissors, so it can be applied to various locations. It has double-sided tape, so you can apply it immediately after peeling off the backing paper. Also, for shipping purposes, it is sealed, but it will return to its original state after a while after opening, so don't worry. In addition, the specifications may differ depending on the product's arrival, but there is no change in the effect, so please rest assured. We also accept changes in the number of sheets and sizes, so feel free to comment. We also accept sales of sound-absorbing materials only, so we are waiting for your comments. ※ Both the vibration dampening material and the sound-absorbing material are hand-cut, so there may be some slight errors, but please understand.