Easy to install. Clean the razor before installing. Please ensure compatibility with your razor model. Fits models 9199XL, 9195XL, 9190XL, 9170XL, 8240XL, 8250XL, 8251XL, 8260XL, 8260XL, 82270XL, 8270XL, 8170XL, 8171XL, 8175XL, 8280XL, 8160XL, 8150, 8140XL, 8138XL, AT928, HQ9199, HQ9190CC, HQ9170, HQ91609, HQ9140, HQ9080, HQ9070, HQ9020, HQ8290, HQ8270, HQ8250, HQ8240, HQ8173, HQ8170, HQ8160, HQ8150, HQ8140, HQ8100 HQ9. Colour: Silver Material: plastic + metal Size: 6 x 6 x 2cm Package Contents: 1 x replacement head Only 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 to be slightly different from the actual product. The allowable measurement error is +/- 1-3cm.