Material: 

Heat Thermal Activated

Nickel titanium/Stainless Steel 
Round Stlye
Nature Form/Round /Ovoid

Material: Nickel titanium
Round Stlye
Nature Form

Size Opotion:

0.12 Upper, 0.12 Lower
0.14 Upper, 0.14 Lower
0.16 Upper, 0.16 Lower
0.18 Upper, 0.18 Lower
0.20 Upper, 0.20 Lower

One pack just include one size, not mixed pack
Please note us the size you need in your order. Or we will deliver randomly. Thanks in advance!