SCS Direct Light Up Building Bricks (2x3) with On/Off and Dim Ability (Set of 8) - Tight Fit with All Major Brands 8 2x3 Light Up Bricks - 4 light up white and 4 light red and blue Works with all major building brick brands Guaranteed tight fit - Enhance all your existing builds with lights! The only light up brick out that stays on - Features dimming ability and on/off Includes 8 light up bricks in 2 different colors!