M.K. Brothers Mfrs. Pvt. Ltd. Manufactures Aluminium Plug Type Spindles. M. K. Brothers Mfrs. Pvt. Ltd. Is the manufacturer of aluminium plug type spindles and heavy duty spindles and soft cotton thread. Aluminium Plug Type Spindles is used for cotton man made fibres and worsted ring frames in doubling and twisting machines. Aluminium Plug Type Spindles is made up of special aluminium rod to ensure strength and stability of spindles.