28mm x 36mm Brown Water Cooling Jacket for B28 Brushless Boat Motor Product Name : Water Cooling Jacket;Fit Model : for B28 Brushless Motor Brass Nipple Size : 2 x 4mm/0.08" x 0.16"(Inner D*OD);Jacket Size : 28 x 36mm /1.1" x 1.4"(Inner D.*L) Total Size : 46 x 46 x 41mm/1.8" x 1.8" x 1.6"(L*W*H);Material : Aluminum Color : Brown, Brass Tone;Net Weight : 16g Package Content : 1 x Water Cooling Jacket