This listing is for 1 set of all 12 caps that fit the Trinity Blending Buddy Brushes. It includes all 3 color families as listed below. Primary: red, yellow, green, blue Secondary: pink, purple, mint, orange Neutral: white, black, brown, gray These caps have an adhesive magnet inside of them, just pull off the release paper & pop them on the bottom of your brush. This gives the brush extra stability so it doesn’t fall over as easily & the magnet allows it to coordinate with our platforms too. Set Of 12 Blending Buddy Brush Caps - Color Coding, Magnetic, Extra Stability