•【Impact-Resistant Material】Made from high-quality ABS plastic, offering excellent resistance to impact and wear •【Enhanced Durability】Built for long-lasting performance, ensuring reliable use over time •【Easy Installation】Simple and quick to install, saving time and effort for users •【Smooth Operation】Designed to maintain smooth and efficient operation for your lawn trimmer •【Break-Resistant Design】Engineered to reduce the risk of cracks or damage during heavy use Specifications: •Material: ABS •Size: 43*17mm •Replaces part numbers: 791-153066 and 791-153066B •Applicable: •Compatible with MTD models: 41CDZ01C735, 41AD110G883, 41DD160G983, 41AJCS-C902,41AJBT-C954, 41EDZ03C758, 41BDC25C010, 41AD26OG701, 41CD425C995, 41CDY15G901,41BDY40G901, 41ADY71C901, 41ADC25C010, 41CD700G977, MT765, 41CD765G977,41AD180G983, 41AD452C755, MT700, 41ADZ01C758, 41AD700G929, 41ADY21C901,41AD457C755, 41AD465C910, 41BDY20C901, 41BD700G977, 41CDY70C901, 41AD575C910,41BDZ25C766, 41ADC46G912, 41ADC05G912, 41ADC20C912, 41BD7VPG900, 41CDZ11G799, 41DDZ12G799, 41BD765G900, 41DDZ03C758 more •Compatible with Craftsman Trimmer: 31674556 31679111 31679112 315742260 316711370316711470 316711471 316791020 316791080 316791081 316791190 316791191 316794400 316795030 316796150 316798221 316990100 316990110 16.792520 (41AJCS-C799) 16.794400 (41ADZ21C799) 316.711370 (41ADZ11G799) 316.745400 (41ACETBC799)316.79119 (41AD780C799) •Compatible with Troy-Bilt string trimmer models: BR720, TB10CS, TB15CS, TB20CS, TB20DC,TB21EC, TB22EC, TB26TB, TB32EC, TB415CS, TB475SS, TB50, TB65SS, TB70SS, TB75SS,TB80EC, TB22, TB22EC, TB2EC, TB80EC and more Package included: •4 x Bump Knob Assembly •Other items not included