This 10 pack of analogs is for both stone model and digital model use. It has a 3.5mm diameter and a thinner wall than SKU 14.049P10

This analog is for both stone model and digital model use. It has a 4.5mm diameter and has a thicker wall than SKU 14.048 It is also available in a pack of 10 - SKU 14.049P10

This 10 pack of analogs is for both stone model and digital model use. It has a 4.5mm diameter and has a thicker wall than SKU 14.048P10

This analog is for digital models and comes with screw.