[Premium Material]Made from impact-resistant material with a durable construction that guarantees excellent durability while reducing the risk of breakage or cracking. [Repair Trimmers]High quality and durable bump knobs will replace your or worn bump knobs, keeping your looking like ensuring very smooth running and the best performance of your trimmer. 537185801 Bump Knob compatible with Husqvarna T35 s 537338701 537185801(2003-05), (2005-01), (2007-04).T35 s also compatible with models 123L 225L 232L 322L 323L 324Lx 325L 325Lx 326L 326Lx 326LDx 322R 323R 324Rx 325Rx 325RJx 326Rx 326RJx 525LS 525LST 530LS 535LS etc. Replaces Part Number:537338701. It Also Will Fit Other Husqvarna Produced Brands that Require this Part 537185801 (AYP, Craftsman, Jonsered, McCulloch, Poulan, Poulan Pro, RedMax, Weed Eater Outer Diameter: approx. 6.3cm(2.5inch) Different batches have different shades of color color: blue material: plastic Package Contents: 5 x Trimmer Bump Head Knobs Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.