We're releasing a combination set highly requested by our customers: 40 deadening sheets, 4 medium-sized sound-absorbing materials, and 2 small-sized sound-absorbing materials! For those who want to thoroughly deaden their front doors! For those who are concerned about the number of sheets needed for medium to large-sized cars, we recommend this set over Deadening Kit A. ・Vibration damping material: 10cm x 5cm, 40 sheets ・Sound-absorbing material: 10cm x 10cm, 4 sheets 10cm x 5cm, 2 sheets By applying the vibration damping material and sound-absorbing material together, you can dramatically enhance the deadening effect. 【Vibration Damping Material】 It's an adhesive butyl tape, so you can use it immediately after peeling off the backing paper. Vibration damping sheets absorb vibrational energy and significantly reduce the transmission of sound and vibration. By applying them to vibrating parts such as metal and resin surfaces, which are the source of the problem, you can significantly reduce unpleasant noises such as "rattling sounds" and "warbling sounds." It's an adhesive type, so no glue is needed. Easy to process. Recommended for preventing rattling sounds in the back of 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 panels behind the speakers and other door panels. Combining this sound-absorbing material with the vibration damping sheets can provide even greater soundproofing effects. This can also be easily cut with scissors, so it can be applied to various locations. Double-sided tape is attached, 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 damping material and the sound-absorbing material are hand-cut, so there may be some slight errors, but please understand.