The Masters Golf Extension Piece Double End .60 is an essential club-servicing tool designed for professional clubfitters and dedicated golfers who want to add length to their steel-shafted clubs quickly and economically. Built for shafts with a .600" butt diameter — the most common size in the industry — this double-ended piece lets you service two clubs from a single extender, delivering outstanding value in the workshop. Whether you are custom-fitting a new set or adjusting an existing one, this extension piece makes the job clean, precise, and reliable.
Unlike standard single-use extension pieces, this double-ended extender features a tapered swaged tip at both ends with a parallel mid-section in between. Simply cut it at the midpoint to yield two complete, ready-to-install extensions — one piece does the work of two, reducing material cost per club serviced. This makes it an exceptionally economical choice for any busy fitting bay or repair workshop where multiple clubs require lengthening at once.
Installation requires no specialist machinery. Step 1: Verify your shaft has a .600" outside butt diameter using a shaft gauge or caliper. Step 2: Apply shaft-bonding epoxy to the tapered end and slide it firmly into the shaft butt. Step 3: Allow the epoxy to fully cure, then trim the protruding section to your target playing length using a shaft-cutting saw before re-gripping.
Adding length at the butt end will increase the club's swingweight. As a general rule, every half-inch of extension adds approximately three swingweight points. Plan your target length accordingly, and note that extending a steel-shafted club (other than a putter) by more than 2" is not recommended, as it may affect shaft integrity and playing performance.
Before ordering, always measure the outside diameter of your shaft's butt end with a shaft gauge or caliper. The .600" variant suits the vast majority of steel iron shafts — including most True Temper and similar profiles. If your shaft measures .580", Masters Golf also offers a matching .580" extension piece for a precise fit.
| Specification | Detail |
|---|---|
| Product Code | SEXPY |
| Brand | Masters Golf |
| Category | Club Servicing / Shaft Extensions |
| Compatible Shaft Type | Steel shafts only (not suitable for graphite) |
| Butt Diameter | .600" (15.24 mm) |
| Total Length | 12" / approx. 30.5 cm |
| Ends | Double-ended (tapered swaged tips at both ends) |
| Clubs Per Piece | Extends up to 2 clubs (cut in half at midpoint) |
| Installation Method | Shaft-bonding epoxy + cut to length |
| Maximum Recommended Extension | 2" per club (irons/woods); putters may vary |
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