The lightweight about the Universal Shaft is achieved by reducing the propeller shaft diameter from 4.2mm to 3.4mm (two piece set). The extra weight the typical shaft is 35g weighed from the lightweight shaft 29.5g (one shaft), a weight saving of 5.5g. This implies along with four shafts built, you are able to conserve an overall of 22g. The aforementioned image shows two Lightweight Assembly Universal Shafts.