Lead hardness:

Default

Lead color:

2 pieces of 0.5 [1 box of lead +1 rubber]]

2 PCs 0.7 [1 box of lead +1 rubber]]

4 pieces of 0.5 [2 boxes of lead +2 rubber]]

4 PCs 0.7 [2 boxes of lead +2 rubber]]

6 pieces 0.5 [3 boxes of lead +2 rubber]]

6 PCs 0.7 [3 boxes of lead +2 rubber]]

8 pieces of 0.5 [4 boxes of lead +3 rubber]]

8 PCs 0.7 [4 boxes of lead +3 erasers]]

10 pieces 0.5 [5 boxes of lead +4 rubber]]

10 PCs 0.7 [5 boxes of lead +4 rubber]]

4 pieces [2 pieces 0.5+2 pieces 0.7] get gifts

6 pieces [3 pieces 0.5+3 pieces 0.7] get gifts

8 pieces [4 pieces 0.5+4 pieces 0.7] get gifts

10 pieces [5 pieces 0.5+5 pieces 0.7 get gifts

Add 10 0.5 lead cores

Add 10 0.7 lead cores

Add 20 0.5 lead cores

Add 20 0.7 lead cores

1 0.5 pen

1 0.7 pen

4 0.5 pens

4 PCs 0.7 pens