Looped-End String Wet Heavy Duty Cotton Mop – Industrial Grade – Cotton
And it includes 1 cotton mop head with looped ends for optimal absorption without fraying. How to install the mop head: Simply rotate the screw above the jaw counter anticlockwise to unscrew the part like a star, use your strength to put the mop head into the jaw clamp, and then clockwise to fasten the mop to the jaw.