Choose the Size Properly
Similar to a bong, a dab rig has a slide that extends inside the rig so that the vapor can pass through and be filtered by the water. Depending on the setup at hand, one size nail or another may work with your rig. There are interchangeable nails and adapters available to accommodate varying sizes and it is important to always use a nail that is properly secured before dabbing.
Titanium Composite, Ceramic, & Quartz Nails
Domeless Nails can be made of either material and there are pros and cons to each, but the choice comes down to preference. Quartz is obviously the most delicate, but it heats quickly and retains heat well, plus it is known for pure taste. Titanium composite will last forever, but it takes longer to heat and cools quickly. Ceramic, also known for good taste, takes awhile to heat but retains the heat well.