... ISO9001 4.good payment and after-sale service Adapter sleeve Materialcast iron or chrome steel(GCR15) ... , and enjoy great reputation in North America. Adapter sleeve(H200 series)H204,H205,H206,H207,H208 ... H3168,H3172,H3176,H3180,H3184,H3188,H3192,H3196 Adapter sleeve(H3000 series)H3024,H3026,H3028,H3030, ... H3068,H3072,H3076,H3080,H3084,H3088,H3092,H3096 Adapter sleeve(H2300 series)H2304,H2305,H2306,H2307, ...