They are easily detachable which makes them easier to clean than standard blades that require screws to be taken out for cleaning and maintenance.
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.
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 blade
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).
Fits Wahl ARCO SE, Bravura, Chromado and Li+Pro clippers