3 in 1 Relieve Tension Funny Polar Pen Set Disassembly Magnetic Sculpture Building Block Screen Writing Gel Pen

Color: black, silver, gold, colorful
Big Set includes: 30 steel balls(18 small, 9 middle, 3 large), 14 magnetic tubes, 2 touch screen tips, 5 refills, 1 clip, 1 gel pen point tube, 2 pen caps, total 55 items/set
Size: 18*9.5*2cm
Weight: 310g

Small Set includes: 12 steel balls(2 small, 2 large, 8 middle), 13 magnetic tubes, 2 touch screen tips, 1 refill, 1 clip, 1 gel pen point tube, 2 pen caps, total 33 items/set
Size: 18*6.3*2cm
Weight: 200g