Description: Lubricate the two spindles with oil. Hook with retractable safety so that the hook is mounted on a spring. Place two sets of hook at 180 deg; on opposite parts of each other. Push the safety pin into the locked position on the hook. Using a 3/4" or 19mm collet and a ratchet to turn the spindle, depress the starter spring enough to safely remove the solid cartridge retaining nut. Table size oacute;w: 315mm/12.40in Package includes: Adjustable spring spacer with storage box Note: 1. Please allow slight error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. I wish you a wonderful shopping experience online!