These domeless quartz nails are designed to take an electrical coil from an E-Nail or similar. These nails work with coils of various sizes and the EDIT Collection offers various joint sizes as well.
Multiple Joint Sizes
Multiple Coil Sizes
Female versus Male
When choosing a replacement slide, first determine whether your rig joint is male or female. If your existing slide fits OVER the glass joint on your rig, then buy a female slide. If your existing slide sits INSIDE the glass joint of your rig, then buy a male slide.
Most coils are either 16mm or 20mm wide. You will need to measure the diameter of your coil across the circular element and buy a bowl size 0.5mm smaller.
Joint Size (Trick of the Trade)
Determining your joint size can be measured with your little finger. Place your little finger to the rig or bowl (slide) FEMALE joint and check out the following rough guide:
Tip of little finger just fits the joint = 10mm Joint
Fits to first knuckle of little finger = 14.5mm Joint
Fits to second knuckle of little finger = 18.8mm Joint
Fits your thumb in the joint = 29.2mm Joint
Very easy but careful when measuring glass not to cut yourself.