• Material guarantee, safe to use, safe to play, for safety escort
• The built-in screws are hardened and heat-treatedsmall and hard, and with springs, the tightness can beadjusted to your liking
• Professional structure shaping, smooth feel, can quicklyrotate in place, faster detonation
• Structural engineering and screw positioning technology areused to ensure the stability of the cube and solve the problemiofsticking caused by traditional positioning block falling off