Compatible models: just like the replacement part, these attachments are specially designed for Combo J7/J7+ vacuum cleaner. High filtration efficiency: the dust bag has a four-layer filter (non-woven fabric + 2 x melt-blown cloth + non-woven fabric), which effectively filters out 99% of dust particles and up to 2.5 m. The HEPA filters are equipped with stronger capabilities to filter up to 99.5% of dirt, pollen, small dust particles and substances. You can effectively protect your for vacuum cleaner and prevent the air we breathe from being dirty. Effectively removes stubborn stains: Due to design, the side brushes can penetrate deep into floor space to remove dust and keep the noise level low. The double rubber brush strengthens the suction effect, effectively removes dirt, reduces tangles and sweeps hair with ease. The wipes are made of microfibre material, which is soft and can effectively remove stubborn stains. [Recommended replacement frequency]Based on usage: Main brush: Every 6~12 months; Side brush: Every 3~6 months; HEPA filter: Every 3~6 months; Rag: Every 1~3 months; Dust bag: Every 1~2 months. Material: plastic colour: green Package Contents: 4 x roller brush 4 x filter 6 x dust bags 4 x Mop rag 6 x side brush 6 x screw 1 x cleaning brush 1 x screwdriver Only the above package content, other products are not included. Note: Light reflection 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.