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Shaft flex affects how much the shaft bends during your swing — which can impact accuracy, distance, and feel.

Common flexes include:

L (Ladies): Very flexible, for slower swing speeds

A (Senior): Slightly stiffer, still great for slower swings

R (Regular): Moderate flex — most common for casual golfers

S (Stiff): Less bend — better for faster swing speeds

X (Extra Stiff): Minimal flex — designed for very high swing speeds

You may also see numerical flex ratings like 5.0, 5.5, 6.0, 6.5, or 7.0, especially on shafts from brands like Project X:

5.0 ≈ Regular

5.5 ≈ Firm (between Regular and Stiff)

6.0 ≈ Stiff

6.5 ≈ Strong Stiff / Tour Stiff

7.0 ≈ Extra Stiff

These numbers offer a more precise fit for golfers dialed into their swing tempo and speed.

Length is adjusted based on your height or setup preference:

Longer clubs can help taller players or those with longer arms maintain proper posture and generate more distance.

Shorter clubs can benefit players seeking more control or a more compact swing.

The right length improves comfort, consistency, and contact.