770 board pen refillable set of 3 product description refillable,ergonomic body,no smudges and streaks,easy to erase,dry quickly,pencil feature: refillable package contents: 1 x black 770 kraf refillable board pen1 x blue 770 kraf refillable board pen1 x red 770 kraf refillable board pen. maximum 10 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 10. more than 10 stocks are available to be sold at the campaign price. the seller determines the sale price of the product you have examined. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.