BikeTek Series 3 Orange Black Garage Mat 190 X 80cm Compressors 310mm Between Fixing Hole Centers Size:4th O S 39.2mm 310mm Between Fixing Hole Centers All the flywheels that we have come across from these models have had the two extra sending magnets necessary fitted into the flywheel dispite them being intended for points models please check ( see picture below ) ) We have cpme across the odd flywheel that are slightly chunkier and some trimmming to the flywheel centre cam my be necessary for stator plate clearance Mats also function as protective environmental work mats both indoors and outdoors The backing is non slip and prevents lubricants seeping through