These Drennan PTFE internal pole bushes are much longer than most other pole bushes & ensure ideal contact between the bush & the elastic.To fit, the pole tip should be cut back in small stages until a ideal push fit is obtained.They are available in 8 sizes#1 dia. - int. 1.2 millimetres - ex. to fit in pole 1.8mm#2 dia. - int. 1.4 millimetres - ex. to fit in pole 2.0mm#3 dia. - int. 1.6 millimetres - ex. to fit in pole 2.2mm#4 dia. - int. 1.8 millimetres - ex. to fit in pole 2.4mm#5 dia. - int. 2.0 millimetres - ex. to fit in pole 2.6mm#6 dia. - int. 2.2 millimetres - ex. to fit in pole 2.8mm#7 dia. - int. 2.4 millimetres - ex. to fit in pole 3.0mm#8 dia. - int. 2.7 millimetres - ex. to fit in pole 3.3mm2 bushes per pack. ....(continued here)