6 Pack Full Size Magic Speed Cube 3x3x3 Easy Turning and Smooth Play Puzzle Cube Premium Speed Cube in Bulk Pack for Kids and Adults! Great brain teaser for the kids and a stress reliever for the adults after a long day. Promotes problem solving skills, eye-hand coordination, and cognitive thinking. All cubes are ready to play without any tuning, however you can still adjust the tension to your specific needs with a screw driver. Just pop open the cover in the middle on all sides, then turn counter clockwise to loosen and clockwise to tighten. Our Cubes are made from super durable ABS material and it's one of the best cubes in the market. Our smooth cornering technology allows cubers to turn faster. This value bulk pack is great for school supplies, birthday party favors, giveaways, party supplies, and all other occasions. This is the ultimate gift for all ages. Package Contains: 6x Speed Cubes with Individual Packaging 6x Instruction Manuals