Strictly Brik briks can be used with already exisiting brick construction toys, attching without issue and fits nice and tight and snug. This set come with 1 16cm x 16cm (6"x6") base plate and assorted briks in a ziplock bag. Small enough to take with you on the go, and big enough to handle ones iagintion and creativity. Suitable for children aged 4+ CLASSIC SIZE, GUARANTEED TIGHT FIT: Strictly Briks classic building bricks play nice with other toys and are 100% guaranteed to be compatible with all major brands. Our classic size products are a guaranteed tight fit with any standard size building bricks, no matter what existing brand of building bricks or construction brick sets your child already owns. Help your child build a city and become a creator without spending a fortune CREATIVITY HAS ITS BASE WITH STRICTLY BRIKS: Let your imagination run wild! Our baseplates allow you to take your building to a whole new level. Containing tons of Briks this set is perfect for building houses, space ships, boats, castles, fortresses, and more! Unlike other brands, our unique base plate has a bottom that is designed to be stacked and combined with your existing bricks for tons of different construction possibilities. Stack em' up! AFFORDABLE, TOP QUALITY: All Strictly Briks products are built to premium standards, and are a guaranteed tight fit with all major building block sets. They will not easily break or bend, and will keep your family imagining for years to come INCLUDED IN THE SET: This 216 piece bundle contains 72 1x1 bricks, 48 1x2 bricks, 72 2x2 bricks, 24 2x4 bricks, and one 6 x 6 baseplate. With 5 Brik shapes, 12 great colors, and 216 total pieces, this Brik set opens up limitless building possibilities! Whats in the box 216 assorted briks and pieces 72 1x1 bricks 48 1x2 bricks 72 2x2 bricks 24 2x4 bricks and one 6 x 6 baseplate