MTSPB2025 Features: -Provides cusioning effect when absorbing a blow.-Helps prevent metal streching.-Round edge for high crown areas.-Steel implanted for the proper weight.-Good in corners Rubber heel dolly to absorb hammer blows. Rubber helps prevent the metal panel from stretching. The round edge is for high crown areas and it"s also designed for corners. Steel implanted for the proper weight..-Rubber Heel Dolly. Warranty: -Lifetime warranty does not cover abuse.