Paddle Roller for Fibreglass -Resin - Laminating GRP CSM- You choose Size These Paddle rollers are the perfect accessory for the removal of air bubbles in your fibreglass project. They consolidate the fibreglass . The rollers are re-usable , we recommend using ACETONE ( check our other listings ) to clean any resin left on the roller. The drop down quotes 2 sizes. This refers to the length of the roller and the diameter of the roller. For example 70 x 15 : the roller has a length of 70mm and a diameter of 15mm. 140 x 21 : the roller has a length of 140mm and a diameter of 21mm. We also sell various fibreglass kits and various resins - check out our Ebay store. Note - the colour of the handles can change colour depending on stock but the size of the roller will remain as quoted.