They are easily detachable which makes them easier to clean than standard blades that require screws to be taken out for cleaning and maintenance. Features n The 5 in 1 blade is unique because it has 5 of the top used blade sizes integrated into just one blade, saving time and costs. n There are currently 5 blades in this series 2179-301 5 in 1 blade Fine; 2179-401 5 in 1 blade Coarse; 41884-7190 5 in 1 blade Pro Blade/Fine; 41854-7603 5 in 1 blade Champion blade; and 41873-7200 Non-Adjustable 45 bladen This is the 2179-301 Fine 5 in 1 blade This is a standard blade. It is meant to be used on animals with fine hair and it easily adjusts to blade sizes #9, #19, #15, #30 and # 40. This is a standard blade because it is typically the blade that comes already attached to clipper units. Except for the current Li Pro .n Fits Wahl ARCO SE, Bravura, Chromado and Li Pro clippersn Cutting positions #9, #10, #15, #30, #40