HIGH QUALITY AND DURABLE - These handles are made of high quality plastic and copper, are corrosion resistant, have good toughness and impact resistance, and have a long service life. STAR DESIGN - Six-pointed star and wire design provides a comfortable grip. The surface is carefully polished, smooth and burr-free, and will not hurt your palm when holding it. EASY TO USE - Screw design, easy to install, just align the internal thread with the screw and turn tightly. They are great accessories and can replace old or damaged handles. EASY TO USE - Screw design, easy to install, just align the internal thread with the screw and turn tightly. These are great accessories and can replace old or damaged handles. YOU CAN GET - 14 black M8 thread tightening knobs. Internal Thread Diameter: M8; Head Diameter: 30mm/1.18"; Height: 13mm/0.51".