California Proposition 65: This product contains a chemical known to the State of California to cause cancer. California Proposition 65: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm.There are many applications which call for a tool like a soft face hammer, which can strike blows, but has just enough give that it will not mar the surface of the object being struck, or overpower the fastener it is used on. Take a look at the features for Stanley Soft Face Hammer. Handle Material: Hickory, Overall Length: 12-1/8", Head Weight: 8 oz..