382pc O-Rings Kit with Plastic Case. 30 different sizes included in mm’s.

QTY—Width—-Inside Dia.———QTY—Width—–Inside Dia.
20X—1.78mm–2.90mm————13X—2.62mm–9.19mm
20X—1.78mm–3.69mm————13X—2.62mm–10.77mm
20X—1.78mm–4.47mm————13X—2.62mm–12.37mm
20X—1.78mm–5.29mm————13X—2.62mm–13.95mm
20X—1.78mm–6.07mm————13X—2.62mm–15.54mm
20X—1.78mm–7.65mm————13X—2.62mm–17.12mm
20X—1.78mm–9.25mm————13X—2.62mm–18.72mm

10X—3.53mm–18.64mm———-10X—3.53mm–31.34mm
10X—3.53mm–20.22mm———-10X—3.53mm–32.92mm
10X—3.53mm–21.82mm———-10X—3.53mm–34.52mm
10X—3.53mm–23.39mm———-10X—3.53mm–36.10mm
10X—3.53mm–25.00mm———-10X—3.53mm–37.70mm
10X—3.53mm–26.57mm————7X—5.34mm–37.47mm
10X—3.53mm–28.17mm————7X—5.34mm–40.65mm
10X—3.53mm–29.75mm————7X—5.34mm–43.82mm