The HMM Ballpoint is made of finely crafted aluminum alloy, and weighs only 22g. It's light weight makes it comfortable for writing over an extensive period of time. A heavy-duty spring is used for the click structure making it sturdy.PRODUCT DETAILSFinely crafted milled aluminum22gSCHMIDT Refill P900MMade in TaiwanABOUT THE BRANDHMM stands for Human - Mechanic - Method. Specializing in high quality and finely crafted coffee ware and office accessories, HMM focuses on product design that works not only to function, but to breathe life into the design. With selected materials and skilled craftsmanship, their classic and timeless products are ready to embellish your daily life.