New Genuine Homelite GST GSTBC HBC18 HBC28 HLT-15 HLT-16 HLT-17 HLT-28 ST-155 ST-175 ST-185 ST-275 ST-285 ST-385 ST-485 SX-135 String Trimmer Muffler Baffle #98782 #UP05878 #04790.