B120 DUN Dunlop V-Belt Pitch_ 5M (5mm) and the second number is

and the second number is the internal length in mm

4L 670 / 1702 La Garden Belt

4L 410 / 1041 La Garden Belt

The most salient features of the Optibelt ZR timing belts are the high quality neoprene compounds

This belt fits various STIGA Lawnmowers including:

B120 DUN Dunlop V-Belt Pitch_ 5M (5mm) and the second number isTraditional V Belts are manufactured with cross sections Z, A, B, C & D sections with a range of over 500 lengths currently available. V Belts for industrial use are designated both to RMA standard e. g. A52, where the letter designates its cross section and the number corresponds to a nominal internal length in inches and to DIN standard e. g. 13x1320Li, where the rst number denotes the width in mm, and the second number is the internal length in mm.