Description: . Made of material, and practical to use. This kit will allow the saw to run the cooler, in breathing, and make it more powerful. Don't forget to adjust your carb slightly rich to compensate for the extra airflow. For Stihl 044, 046, MS440 Magnum, MS440 and ms460 chainsaws. Includes: muffler cover with screen stop, two bottom screw cover (M6x20), two top screw cover (M5x6) and a T27 screwdriver for simple installation on saws. Search Words: (021, 024, 025, 026, 028, 029, 034, 036, 038, 044, 046, 064, 066, 084, 088, 250, 260, 280, 311, 360, 361, 362, 391, 440, 441, 660, 880, 020t, 200t, 201t, 251, 261, 271, 291, cm, c-m, ms, auto tune, es, super, pro, magnum, wood boss, farm boss, 4-mix, 2 stroke, chainsaw)Package Contents:1*Muffler Cover + 2 * Screw Bottom Cover (M6x20)+ 2 * Screw Top Cover (M5x6)+ 1 * ScrewdriverNote:1. The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.