This is a replica of the Magnum Cartridge used in center fire rifles. It is 10% longer and wider than the 30 cal bolt action pen.The realistic bolt-action handle advances and retracts the Parker refill. It is the perfect gift for the sportsman & hunter who like a more substantial writing experience. The metal has a 24k Gold finish. This pen has been turned on a lathe to expose the beautiful grain of the Bocote which is an exotic wood that comes from Central and South America. The wood has a very durable hand applied multi-layer acrylic finish to protect it. It should not be left in extreme temperatures in a vehicle. When hand oils build up on the finish wipe with a microfiber cloth. If the wood appears or feels dry apply mineral oil and wipe with a microfiber cloth which will also remove the hand oils from the metal. It is approx. .5"dia. x 5.5"L A card with the name of the wood and it's origin along with a care of wood pens are included with the purchase.