The 747B "Super Rock" is designed for the heaviest of hitters. Excellent large stick for rock. When the 747 "Rock" stick is not enough, the 747B provides extra length and diameter.Shira Kashi Oak is a dense and heavy wood providing a sturdy feel in your hand and excellent ride cymbal articulation. Sticks made of this Japanese Oak are exceptionally durable and usually last longer than other types of wood.For over 50 years, ProMark has been one of the world's leading manufacturers of drumsticks, mallets, and percussion accessories. Owned and operated by D'Addario & Co., the Houston, Texas based ProMark produces products used globally by the greatest drummers and percussionists in the world, including Neal Peart, Phil Collins, Simon Phillips, Ringo Starr, and many more.