Graphite comfort
The composite core dampens harsh vibration on mishits, easing strain on hands and elbows.
The graphite iron shaft that plays with steel-like stability
Aerotech Steelfiber Β· Golf ShaftsSteelfiber is one of the most successful iron shaft profiles in professional golf. Its graphite composite core dampens vibration, and more than 59 miles of Steelfiber wound over the shaft stabilize it on off-center hits. This parallel-tip version fits .370" iron heads and is trimmed at the tip and butt to your specs, in weights from 55g to 125g.

Why golfers choose it
The composite core dampens harsh vibration on mishits, easing strain on hands and elbows.
The Steelfiber outer mesh resists twisting on off-center strikes for tighter dispersion.
Six weights from 55g to 125g let fitters match everyone from moderate swingers to tour speeds.
Product details
| Brand | Aerotech |
|---|---|
| Model | Steelfiber (Parallel) |
| Product type | Graphite iron shaft |
| Tip diameter | 0.370" (parallel) |
| Butt diameter | 0.600" (0.602" on some 110g models) |
| Raw length | 41" |
| Weights | 55g, 70g, 80g, 95g, 110g, 125g |
| Flexes | Amateur, Regular, Stiff, X-Stiff (varies by weight) |
| Torque | 1.8 to 5.1 depending on weight and flex |
| Installation | Tip and butt trim to length |
Weight classes set the overall feel, and not every flex is offered at every weight. For example, 55g comes in Amateur and Regular, while 125g is Stiff. If you're moving from steel, many players start one or two weight classes lighter than their current shafts. We're happy to help narrow it down.
Product questions
Grater Golf support
Tell us your swing speed, current shafts and club heads, and weβll help you choose the right weight, flex and build.
Ask Grater GolfFree standard shipping on most orders $100+ within the contiguous U.S. Eligible items may be returned within 30 days. Custom, modified, cut, installed, and made-to-order products may be final sale.