... more writer's cramp. Teacher Rewarding Self inking Stamp Set Specification:1) Material:PS,ABS2)Size:4. ... Orange,Blue,Green,Purple,Yellow4)Stamp's content OEM welcome5)MOQ:5000sets6)Stamp's content OEM welcome Features ... ,purple,orange and green ink! 4) Each stamp has a matcking cover to protect the ink from ... surfaces by accident. 5) Comes in a handy,stackable plastic storge tray6)Makes a great gift ...