More about 4 1/2"W x 2"D x 6 1/2"H Michael Healy Golf Putter Door Knocker, Nickel Silver and Chrome... This Golf Putter Door Knocker, by the master artisan Michael Healy, is cast from a nickel-silver and chrome alloy. With its cool tones, this item is an alternative to the majority of door knockers, which are cast in warm yellow brass. This door knocker is an excellent gift for the avid golfer in your life or install it to show your own love for the sport! The Golf Putter Door Knocker is among many great items from the Michael Healy collection, all cast from detailed molds and having excellent integrity and durability. The Golf Putter Door Knocker is made of solid metal, and wonderfully detailed, down to the black putter handle and the golf ball with its dimpled surface.