EIKOHGIKEN Heli Muffler Super Silencer C30 Kyosho Concept 30 Made in Japan
The muffler share is designed to fit for Kyosho Helicopter Concept 30. The manual says use a nipple that is included in the standard muffler for Concept 30. The screw pitch of this muffler is 35mm, it should fit on the latest OS32SX as well.