The spacing of holes for non-tensioned circlips is normally between 20 mm and 50 mm, The tips used to spread the rings are fitted to match the opening width of the non-tensioned circlip, Opening widths 18-28 mm: Combination tips E-8005 1 A and E-8005 2 A, Opening widths 29-39 mm: Combination tips E-8005 1 A and E-8005 4 A, Opening widths 40-50 mm: Combination tips E-8005 3 A and E-8005 4 A, Opening widths 40-50 mm: Combination tips E-8005 3 A and E-8005 4 A