Part number: A 97910 A, 308042003, compatible with Homelite ST-385, ST-385C, HLT28, ST285BC, GST-BCST485, ST-385BC, HBC-30, ST-275, ST-385BC, HBC-30, ST-275, S1400, DC1600. Part number: UP06764, compatible with John Deere S1400 ~ DC1600 ~ BC1600. The housing is made of red plastic, which is eye-catching and durable, with a non-slip texture and easy operation. The knob is designed with a left-hand thread, which makes it easier for you to tighten or release. The package contains: 5x trimmer head red buffer knob, which can meet your usage needs., Weight: 0.330693393 pounds, Manufacturer: eMagTech