Ring bobbin size ( Length *Diameter )

180*18.76mm

190*18mm

195*20mm

200*20mm/20.1mm

200*18mm

105*20.3mm

210*18.7/20/17.7/20 mm

220*19.9/22.2/18/20.35mm

230*22.2/20/20.1/22.5/18mm

More sizes are available , welcome to contact our team