Never be far from your Sonic Screwdriver Sometimes you're the Doctor and sometimes you're the Doctor's Companion. Either way, you don't want to be far removed from a Sonic Screwdriver. The Doctor Who Sonic Screwdriver 11th Doctor Necklace is the perfect way to show your Whovian pride. Modeled after the trusty tool that has saved the universe countless times, the necklace is exactly what fashionable Time Lords are wearing this season. Product Specifications Doctor Who Sonic Screwdriver 11th Doctor Necklace Officially-licensed Doctor Who merchandise Always have access to a Sonic Screwdriver! Materials: 316L stainless steel Dimensions: Screwdriver is 1 1/2" long, necklace is 19" with 3" extender for total length of 22" Ages 13+ For our customers with nickel allergies: this is made from 316L grade surgical stainless steel. That means its five main components are iron, chromium, nickel (10-14%), molybdenum, and manganese. This is implant-grade steel.