YM1359B Features Creative and mutifinctional capacitive magnetic pen(diameter:0.9cm， length:14cm) Include 1pc pen chip， 12pc steel ball， 13pcs magnetic ring and 2pcs capacitance nip Made of permanent magnetic material Can develop your intellect The capacitance nip can directly draw on tablet Also can be used as a compass Can make many kinds of models such as bicycle， spinning top， Chinese martial art modeling etc. For more ideas， waiting for you to develop A great gift for kids and friends General Specs Includes  1x pen chip， 12x steel ball， 13x magnetic ring， 2x capacitance nip  Length 14cm Diameter 0.9cm Package Details Weight: 226.84 g Size: 18.8*6.5*2 cm