If you are looking for a hammer tip that is both tough and durable, the Nupla 6894347 Hammer Tip is what you need. It has a 37,257 in. hardness rating, making it one of the toughest tips on the market. The 1 1/2" head size makes this soft-face hammer tip compatible with most hammers. It has a green color and is made of vinyl material. The 4GGA4 and 4GGA5 Hammers are both compatible with this interchangeable tip head. The Nupla 6894347 Hammer Tip is an excellent tool to have around for all your projects.