with Easy to installPlease clean your shaver before installationPlease confirm your product model before buyingAdapt to the following models;AT series machines; AT920 AT921 AT922 AT926 AT928PT series machines; PT920 PT922 PT923 PT925 PT927HQ8140 HQ9160 HQ9170 HQ9190HQ8100, HQ8140, HQ8142, HQ8150,HQ8160, HQ8170 C&C, 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 + plasticcolour:Silver + BlackPackage Contents:3 x cutter head3 x knife netOnly the above package content, other products are not included.Note: Light shooting 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.