You can get different length blades or get a 00000 blade with guards.
@skypsyd
OsterBlade Size / Hair Length in Inches
00000 – 1/125″
0000 – 1/100
000 – 1/50″
0A – 3/64″
1 – 3/32″
1A – 1/8″
1.5 – 5/32″
2 – 1/4″
3.5 – 3/8″
3.75 – 1/2″
@skypsyd