Hollow Metric dowel pins in your choice of two sizes. These dowel pins are found on Ducati N/C & W/C singles between the crank case haves and probably used on other modes too. The 10mm is Ducati part # 0400.49.240 and the 12mm size is 0400.49.245. Please select the size you need from the pull down menu. !! SOLD EACH !!