Thank you for viewing! ★ This is a weight cartridge kit with excellent convenience, featuring the world's first independently developed detachable wrench (tap maintenance is also possible). ★ Two types of set screws (alloy steel, aluminum) ★ The weight is precisely achieved by CNC computer processing. ★ Billiard cue original HaoQ cue exclusive set screw type weight system, 1 set, brand new, unused. ★ Can be used for weight adjustment of HaoQ cues, FURY cues, and various other manufacturers' cues. ★ You can freely adjust with six different weights. ★ Weights: 0.2oz / 0.3oz / 0.4oz / 0.5oz / 0.7oz / 1.0oz ★ Wrench length: 23.5CM ★ Case size: 20CM (length) / 8CM (width) Regarding usage: When attaching the set screws, if you screw them in only to the point where the threads end, or if you stop using one set screw midway, there is a possibility that a slight noise may occur due to the vibration during the shot, or the set screw may move slightly. In such cases, use two set screws. Screw in the first one to your preferred position, then attach the second set screw and screw it in to the end of the first one, securing it firmly. This will stabilize the first and second set screws. (See Figure 9) If you have any questions, please feel free to comment.