Everything you need to get setup with the 4.0 Quartz Enail. This innovative design by Eric Ross/4.0 Glass was developed in 2017 to solve the problem of quartz and coils staying together.  In the past they used a tight coil around the quartz. This had to be removed each use, or else the quartz would break from thermal expansion.  The 4.0 Quartz/Coil has a peg on the bottom that holds a cotter pin. This safely holds the coil to the quartz without having to be so tight that it could break the quartz cup. Another benefit is that the coil is held tight to the bottom of the quartz where the heat is needed most, and also heats sides of the quartz.