The new FC3000 Oil Filter Cutter is designed to efficently open many types of aviation oil filters including Tempest, Kelly Aerospace, and Champion (including new dash 1 series). Larger opening allows it to cut open filters with diameters ranging from 3.7" to 4.7". Note: This oil filter cutter will not close down enough to cut smaller filters such as the Champion RB-C308 (Rotax). For smaller filters, we recommend using the FC-2000 Oil Filter Cutter. 2 lbs (1Kg) shipping weight.