Dual Ratchet Pig Coin can rotate in both directions which are both RATCHET structure. It was slotted where the two pieces touch to mount a Teflon pressure ring. There's no friction between the two pieces. Just the mechanical feel of the lever spring.
Mokuti material sounds thicker and more steady. The flamed patterns are exquisitely beautiful and unparalleled.
PEI material sounds more clear and pleasant. Surface polished color like amber crystal clear.
