Works best with blade sizes 40, 35, 30 and 10.Extends the cutting length of metal and ceramic blades. for use with andis detachable clippers and most other brands.
Contains sizes #7, 1/16 , 1.5 mm; #6, 1/8 , 3 mm; #5, 3/16 , 5mm; #4, 1/4 , 6 mm; #3, 5/16 , 8 mm; #2, 3/8 , 10 mm; # 1 1/2, 7/16 , 11 mm; #1, 1/2 , 13 mm; #1/2, 9/16 , 14 mm. ultra break resistant plastic with chrome steel mechanism.