Oster Fast Feed Clipper Medium 17 Teeth Medium Blade Size 000 To 1 The specially designed lower blade allows hair to flow into the cutting blades for fast and accurate cutting. The convenient adjustable blade feature allows you to quickly adjust from very close cutting to medium length while saving you the added expense of extra blades Oster Adjusta-Groom Blade Medium- 17 tooth upper Cuts from 3/32″ to 1/100″ Pt# 76913-506