The Philips Norelco QG33 series nose and ear trimmer tube works on the following Philips Norelco QG Series Trimmer models:
Philips Norelco QG3300 Series Shaver model numbers:
QG3360, QG3364, QG3371, QG3380, QG3385, QG3386, QG3398
Philips Norelco Part number: 422203622491