Understanding 900 Global's Reserve Blend Coverstock System

900 Global coverstocks use a simple naming system: Reserve Blend, shortened to RB, followed by a number. Examples include RB82, RB85, RB91, and RB94.

The RB number indicates the relative strength of the coverstock within the 900 Global lineup. As the number increases, the coverstock generally creates more traction, reads the lane earlier, and produces a smoother, earlier shape. As the number decreases, the coverstock tends to be cleaner through the front part of the lane, store more energy, and create a later, more angular motion.

How the Numbers Break Down

Here's a simple way to think about it:

• RB82 — One of the cleanest Reserve Blend options. Gets through the front part of the lane easier and creates more downlane motion.
• RB94 — The strongest current Reserve Blend coverstock. Creates maximum traction, reads earlier, and is designed for heavier oil conditions.

The numbers between those two points represent gradual changes in coverstock strength and motion.

Reserve Blend vs. Product Series Names

One important distinction: Reserve Blend coverstock numbers are separate from 900 Global's product series names. Names like 900 Series, 800 Series, and 700 Series identify a ball's place within the product lineup. They do not describe coverstock strength by themselves.

For example, a ball in the 800 Series can still feature a very strong coverstock if that combination best matches the ball's intended purpose.

The goal of the RB system is simple: when you see the coverstock number, you should immediately have a general understanding of how strong that coverstock is and the type of motion it's designed to create.