This pack contains 200mm (8") lengths of 2.4mm, 3.2mm, 4.8mm, 6.3mm (3/32", 1/8", 3/16", 1/4") 5 lengths of red & 5 lengths of black in each size. That is 40 pieces all together with a total length of 8m Top quality, new heatshrink, ideal for a multitude of applications 2:1 shring ratio (i.e. will reduce to half its initial diameter.