Hign-concerned Chemical:None Origin:Mainland China Specifications: 100% brand new and high-quality carburetor kit. Replacement for 021 023 025 MS210 MS230 MS250 chainsaw. Replaces Walbro: WT-215, WT-286. Replaces Zama: C1Q-S11E, C1Q-S11G. Manufactured to exact measurements to meet or exceed OEM specification. With mount parts as picture, match up exactly with original equipment in perfect fitness. Replaces part number: Carburetor replace #: 1123-120-0603, 1123-120-0605. Air filter replace #: 1123-160-1650. Oil & gas cap replace #: 0000-350-0525, 0000-350-0526. Package includes: 1 x carburetor. 1 x carburetor cleaning brush. 2 x mount gaskets. 1 x air filter. 1 x oil filter. 1 x fuel filter. 1 x spark plug. 1 x oil line. 1 x fuel line. 1 x impulse line. 1 x oil cap. 1 x gas cap. 1 x intake manifold.