Basic Internal Ring
Chart shows a selection of sizes available. For full specifications on the BASIC INTERNAL RING, click the download button.
 Size No.     Ring Dimensions
d3 t b a d0
   RTW -  6 6.7 0.4 0.7 1.6 0.8
   RTW -  7 7.7 1.7 0.8
   RTW -  8 8.8 0.9
   RTW -  9 9.8 0.6 1.1 2.2
   RTW - 10 10.7 1 1.5 2.8 1.2
   RTW - 11 11.8 3
   RTW - 12 13 1.7 3.1 1.5
   RTW - 13 14.1
   RTW - 14 15.1 1.9 3.6 1.7
   RTW - 15 16.2
   RTW - 16 17.3 3.7
   RTW - 17 18.3 3.8
   RTW - 18 19.5 2.4 4
   RTW - 19 20.5 2.5 2
   RTW - 20 21.5 2.5