*** This listing includes a pack of 10 pen kits. *** Slimline Pen Kits are our most popular seller. Their sleek, refined design makes them a popular gift. We recommend Slimline pen kits for turners who are just starting out because the techniques and skills learned to create them can be easily transferred to other turning projects. Slimline twist pen kits have locking refill mechanisms that accept Cross style refills. These are compatible with other Slimline Pen kits. Blanks sold separately.