The slimmest and most compact preset torque wrench available it is a precision crafted high quality tool for either the home mechanic professional bike shop or your own jersey pocket todays high tech carbon fiber frames components and electronic shifting requires exact torque specifications for operational safety and performance and the nano torqbar delivers what you needaluminiumengineering grade plastic constructionhardedned steel tool bitsincludes 4 5 and 6nm sockets345mm allen bits t2