Set comprises 5 each of 4 sizes (l x w): 18 x 9, 26 x 13, 32 x 16, 42 x 21mm Higher contact surface with the glue provides higher resistance. Reinforced collar allows greater force from pulling system. Suitable for use with Power-TEC Gluematic Glue Gun, Part No. 91237 & glue sticks, Part No. 92342. Pads can be removed with a release spray, leaving the panel intact & paint undisturbed, Part No. 92314. Set of round pads available, Part No. 92638.