Red plastic inserts for Simplex Hammers are hard, semi-transparent, and grease & oil resistant. Applications include automotive assembly and repair work, sheet metal working, dent removal, concrete-form setup, and scaffold construction.


Design your own custom hammers. Simplex soft-face mallets can be customized for specific applications by selecting the proper hammer inserts. Choose the same type of insert for both sides, or build a multi-purpose hammer with a different type of insert for each face. The Simplex system uses a patented hammer housing with 3-point clamping that ensures a safe hammer assembly.

| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Type E Inserts | Cellulose acetate | - | red color, hard, hardness 65-75 Shore D | Yes | Yes |
| Hammer Size (Face Diameter) | Tightening Torque With Wooden Handle (ft-lbs) | Tightening Torque With Fiberglass Handle (ft-lbs) |
| 30mm (1.18) | 11 ft-lbs | 18 ft-lbs |