Surgically sharpened on three sides, TroKar hooks penetrate faster than other hook point shapes, which increases hook-up ratios. Precisely and symmetrically ground for consistent performance. Low-profile barb designed for easier penetration, yet delivers ultimate holding power. Tempering process specifically manipulates Q741 wire for maximum strength potential. Sizes: 3/0 - Per 6 4/0 - Per 5 5/0 - Per 5 6/0 - Per 4 Cancer and Reproductive Harm- www.P65Warnings.ca.gov.