Fits models:

HQ1_ _ Series, 
HQ3_ Series,
HQ300 HQ302 HQ304 HQ32 HQ320 HQ322 HQ340 HQ341 HQ342 HQ36 HQ360 HQ362 HQ380 HQ382 HQ384 HQ386  
HQ34 HQ3 HQ38 Series
HQ4_ HQ4 HQ44 HQ46 Series, 
HQ483 HQ48 Series

HQ5401, HQ5413, HQ5421, HQ5425, HQ5426, HQ5430, HQ5461, HQ5465, HQ5601, HQ5603, HQ5605, HQ5625, HQ5699, HQ5800, HQ5806, HQ5810, HQ5812, HQ5813, HQ5815, HQ5817, HQ5818, HQ5819, HQ5820, HQ5822, HQ5826, HQ5830, HQ5842, HQ5846, HQ5850, HQ5853, HQ5854, HQ5858, HQ5860, HQ5862, HQ5866, HQ5870, HQ5890, HQ5604, HQ5801, HQ5811, HQ5816, HQ5821, HQ5825, HQ5841, HQ5845, HQ5847, HQ5848, HQ5849, HQ5851, HQ5855, HQ5856, HQ5861, HQ5865, HQ5885, HQ5886, HQ5601

HQ64_ _ , HQ66_ _ , HQ6831, HQ6842, HQ6843, HQ6849, HQ6853, HQ6854, HQ6855, HQ6857, HQ6859, HQ6863, HQ6868, HQ6879, HQ6940
HQ8_ _ Series
HQ902, HQ904, HQ906, HQ912, HQ914, HQ916

HS190, HS775, HS885, HS890, HS915, HS920, HS930, HS965, HS970, HS985, HS990, HS260, HS360, HS375, HS465, HS470, HS475, HS480, HS485, HS702, HS703, HS704, HS705, HS706, HS708, HS709, HS715, HS755, HS765, HS766, HS777, HS800, HS802, HS805, HS820, HS825, HS830, HS840, HS850, HS860, HS875, HS895, HS896, HS900, HS905, HS925, HS945, HS950, HS955, HS969, HS975, HS980, HS985, HS965, HS930, HS915, HS885, HS775

HP1318, HP1319, HP1323, HP1327, HP1328, HP1323, HP1328, HP1335, HP1336, HP1337, HP1338, HP1339, HP1601, HP1602, HP1604, HP1605, HP1606, HP1607, HP1608, HP1700,HP1327D, HP1328E, HP1337C, 

Fit the following 2-head Norelco shaver models: 665RX, 605RX, 600RX, 505RL, 501RL, 500RL, 486XL,484XL, 482XL, 410DB, 400DX, 300SX, 200SC, 201DB and Philips 2-head models: HQ486, HQ484, HQ483, HQ482, HQ443, HQ442, HS190
Fit Eltron EL-3018