... Stainless steel or Carbon steel2. Brand: TINMY3. High quality with very smooth feeling, quality standard: ISO9001:20084. Noise level: Z1,Z2, ... : P,F,FL,T,PA,PH,FC housingsand also inch series...Packing: sigle packing: plastic bag + color box + carton + ... main spare parts are track roller,top roller,sprocket,track link ,bolt & nut, bucket ,teeth ,adaptor,muffler etc . High quality Pillow block ...