Our 3M™ Roto Peen Flap Assembly effectively peens a variety of metals.

• Flap/mandrel assembly is portable for added convenience
• Tungsten carbide shot is bonded to the flaps, providing a cleaner peening method than loose shot “blasting”
• Available in three flap sizes for both small and large surface areas
• Especially effective for precision in-service rework, manufacturing, repair of small areas, and peening holes
• Imparts a compressive residual stress that benefits the material by strengthening its durability