1.Using blocks tool kits can easily removal the blocks. 2.Multifunctional hammer with plastic on one end to avoid damage to the building blocks during use. 3.The operation is simple, children can also use it alone,the store not only sells building block accessories, but also sells building block sets. 4.The package includes 1 hard plastic Mallet ,1 blocks pliers and 2 brick separator（Random Color）. 5.Size: mallet 6.22x1.53 inch,blocks pliers 4.64x0.19 inch,brick separator 1.53x0.31inch.