Now you can crimp any crimp bead of “medium” size -2mm – 3mm- and various shapes – quick and easy! The Dual bead Crimping pliers; have two forming cavities for round tube and combination crimps of slightly varying sizes. • Dual Bead Crimping Plier - Closes crimp beads and crimp tubes for a quality finish • Torsion Spring - Helps with pressure control • Comfortable Handle - Decreases hand fatigue over extended use • Textured Grip - Adds Traction • 50Mn Carbon Steel • 40-42 HRC Hardness