with Easy to install Please clean your shaver before installation Please confirm your product model before buying Adapt to the following models; AT series machines; AT920 AT921 AT922 AT926 AT928 PT series machines; PT920 PT922 PT923 PT925 PT927 HQ8140 HQ9160 HQ9170 HQ9190 HQ8100, HQ8140, HQ8142, HQ8150, HQ8160, HQ8170 , HQ8174, HQ9100, HQ9140, HQ9160, HQ9170, HQ8141, HQ8155, HQ8172, HQ8173, HQ8200, HQ8240, HQ8241, HQ8250, HQ8253, HQ8260, HQ8261, HQ8270, HQ8290, HQ9020, HQ9070, HQ9080, HQ9090, size: 1x1x0.4cm Material:Metal and plastic colour:Silver and Black Package Contents: 2 x cutter head 2 x knife net Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.