Save with this starter set! You get one Piston Pen Kit in Brass with Oil Rubbed Bronze Wheels, one Piston Pen Kit in Chrome with Brass Wheels, one Piston Pen Kit in Gun Metal with Gun Metal Wheels and one Piston Pen Kit in Oil Rubbed Bronze with Brass Wheels. Plus you get the bushings you need to make the kits. The Piston Pen is carefully designed with a super cool piston and rod mechanical mechanism, that extends and retracts the refill. This captivating pen makes a great gift for steampunk enthusiasts, mechanical gadget aficionados, fidgeters and fun lovers everywhere. It has a unique look and feel you will not want to put down. The piston doubles as a decorative feature on this classic pen design.