Pattern
If you closely examine Fireworks you will see a repeating pattern of star bursts with six spokes. Inside the spokes are six triangles. The pattern goes to the edge and is machined using a 5 axis CNC mill.
The spokes and triangles provide good texture that is comfortable. The texture is not as aggressive as the Diamonds patterns.
Back
The back of every S.O.I. grip is milled flat except for a machined recess that is finished in a spiral. The recess reduces the weight by about 30 percent. There is also a counterbore for the mainspring housing pin. The counterbore allows the grip to be full profile with no notches.
Material
7075 aluminum is strong and lightweight. It is harder than other aluminum alloys and takes longer to machine. After machining, the grips are anodized using the Type III process. This increases the surface hardness and wear resistance of the aluminum.
Note
We continually improve our processes and products. Improvements are incorporated as quickly as possible. The latest models of grips may not match older models.