Siering Short Shank Hinge Port w/ Roller Bit

Siering Bit Hinge Port M303 with bars made of Sweet Iron. The port height is 1 1/2" and is made of stainless steel.

The side shanks are made of stainless steel. The upper tree curves slightly outwards to prevent pressure on the cheekbones. The shanks and the mouthpiece are connected by lateral stainless steel sleeves and can therefore be moved freely.