Rotary tattoo pliers comes with 4 Chains & 5 Chains including 40 & 50 digits at your fingertips! Digits are 3/8 in. and arranged in endless chains. Each chain contains 10 numbered digits (0-9) and two blank spaces. Easy to operate, just like a dating stamp. Digits are easily turned by a slight pressure of the thumb. Features metal handles (heat treated for strength), brass digit plates with nickel-plated steel digit needles, nylon rollers, and pawls