Features : [Precision Trimming with Technology] Our attachment uses technology to automatically track the curves of your face and keep against skin irritation , so you can get a accurate and comfortable trim every time . [Easy to Install and Use] Our attachment is easy to install and use , so you can upgrade your shaving game in no time . Simply cleanse your shaver before installing and replace the blade every 6 months for optimal performance . [Satisfaction Guarantee] We're confident that you'll love our beard trimmer attachment , which is why we offer a satisfaction guarantee . If you're not completely satisfied , simply return it for a full refund . Specification : Item Type : Shaver Trimmer HeadMaterial : ABSFitment : Fit forSeries 3Suitable Model : Fit for 380s 4 3040 3045 300s 301s 310s 3000s 3010s 3020s 3030s 3040s 3050cc 3080 3090cc 320s 330s 350cc 350cc 360 370cc 380 390ccFit for 5774/5775/5776/5778/5777/5413/5412/5415/5416Package List : 1 x Shaver Trimmer Head5 x Guide Comb (1/2/3/5/7mm)