With the 5 trimmer types: large trimmer, design trimmer, precision trimmer, nose trimmer or micro part, you can tailor the groomer exactly to your needs. The set also contains 4 guide combs, all of which have different lengths: 3 mm, 6 mm, 9 mm and 12 mm. These combs work in combination with the large trimmer. With the 5 trimmer types: large trimmer, design trimmer, precision trimmer, nose trimmer or micro part, you can tailor the groomer exactly to your needs. The set also contains 4 guide combs, all of which have different lengths: 3 mm, 6 mm, 9 mm and 12 mm. These combs work in combination with the large trimmer.