4" Stroke Jumbo Shank Inside Trigger Chipping Hammer. Uses 2000 series jumbo buster steel. MOTOC is the most powerful, universal chipping demolition hammer ever designed! Engineered specifically to comply with various regulations for bridge renovation and other demolition work in both Canada and the USA (example: OPSS>PROV 928 Standards for Concrete Removal – Rehabilitation), it combines the best features for performance while maintaining strict tolerances and specifications to ensure compliance. The resulting tool is powerful and fast, ensuring faster material removal across a wide variety of jobs than the traditional chipping hammer designs. Lightweight, powerful and fast – try the MOTOC to safely shorten your work time and speed up your material removal rate.