The special Jelly Interlock bar in pink color from Chaya is made from a unique PU formula with excellent recoil. The interlock construction connects the conical and cylindrical bases, storing more energy compared to conventional bases and providing extra strength when needed. The Jelly Interlock bases absorb all types of vibrations caused by uneven surfaces, as well as shocks from landings. Whether more stability and control or increased agility is required, the hardness selection of the Jelly bases will meet your needs. The 12mm conical / 12mm cylindrical construction fits perfectly onto Chaya's aluminum plates (e.g., Shiva, Ophira, and Zena). It is recommended to check if your plate also fits the Jelly Interlock bases for optimal performance.