Mix and blend acids, chemicals, oils, solvents, etc. in drums. Blades collapse to vertical position when not in use which permits mixer to fit through 2" opening. Mixer is portable and comes with mounting bracket for open top drums or standard 2" IPS drum opening. 4" blades. Prop, 34" L x 0.500" diameter shaft and coupling are 316 stainless. Ball & socket type c-clamp for precise positioning of the mixer shaft. For mixing up to 500 centipoise.