Measures 3 3/4 overall. Replaces a traditional keychain by streamlining everyday carry items into one device. Swiss Army-style key holder that is customizable. Bike tools include: stainless tool; spanners; spoke keys; #3, 4, 5, 6, 8mm hex bits; Phillips head/ other screwdriver; tool bit; bottle opener; life saver tool. Also includes extender, and 8GB USB. Black composition handle.