Does this pair of clippers have detachable blades (the actual metal blade comes off of the clippers..) or is it just the kind with one blade and you put snap on plastic combs to lengthen the cut?

My job is a pet groomer, but its hard to offer advice when I don't know what type of dog you are grooming, or what type of clippers they are exactly. If they are not the type with detachable blades, they aren't really worth having in my opinion (sorry ).

I have this book, its quite good.