Attention all GEARHEADS, Motorcycle and Car enthusiasts! This pen is a real attention grabber! Designed after an actual shock absorber, it features a heavy duty spring that actually compresses on the shaft of the pen for ultimate authenticity. Just twist the keychain style cap off and post to the back to write with the ball point pen (Cross TM refills available at any office supplies store). Also available in Chrome Plate with 24kt Gold finish spring as well as Chrome Plate with Gun Metal finish spring. Looks great in any acrylic color combination and fantastic in wood too!