Unique ``Twistable" Head, rotates 360° for any angle riveting. All-steel construction. Comfortable vinyl grip. Spring-loaded handle for easy rivet loading and ejecting. Extended nose for hard-to-get-at places. Lock clip when not in use. Four nose pieces with wrench. Uses four rivet sizes: 3/32 in (2.5mm), 1/8 in (3mm), 5/32 in (4mm), and 3/16 in (5mm). Not for use with stainless steel rivets.