This is a "bull point" bit for electric hammers.

This is a Bull Point chisel, a power tool accessory for electric hammers, from Shimizu Seisakusho (Rakuda Brand).

Dimensions: 17H x 280mm (17mm Hex Shank, 280mm Overall Length) Country of Manufacture: Made in Japan Features: A chisel designed for demolition and crushing, characterized by its sharp edge.

Main Compatible Models (as listed on the label): Makita: 8500N, 8800N Hitachi (HiKOKI): PH-40F, PR-38E Ryobi (Kyocera): CH-465, ED-383N