Spalding Zeppelin Power Sphere 4-Iron

Launch your long-range approaches with increased confidence, elevated carry height, and deep cavity stabilization using the game-improvement architecture of this Spalding Zeppelin Power Sphere 4 Iron.

Key Specifications:

• Brand: Spalding Golf
• Model: Zeppelin (Power Sphere Edition)
• Club Type: 4 Long Iron
• Dexterity: Right-Handed
• Shaft Material: Steel 
• Flex: Regular Flex
• Condition: Good / Vintage Classic
• Grip: Pro Tour Custom Dimpled Rubber Wrap Grip 

Description:

The Spalding Zeppelin Power Sphere 4 Iron is a highly dependable game-improvement single iron engineered to take the extreme difficulty, harsh vibrations, and low-launch performance typical of traditional long irons out of your fairway approach game. Built around an advanced deep undercut cavity-back head geometry, this iron features an integrated central "Power Sphere" structural badge inside the rear pocket. This smart architecture purposefully shaves away dead weight from the middle of the face frame and concentrates it deeply along the sole channels and out into the perimeter edges. This configuration radically expands the club’s effective sweet spot, boosting head stability ($MOI$) to prevent twisting on off-center heel or toe strikes.

The standout feature of this model is its high-polish oversized wide sole plate profile. Labeled clearly on the sole edge with its stylized "4" and Spalding script tracking metrics, this wide footprint acts as an automatic buffer across the turf. This wider frame lowers the club's center of gravity ($CG$), allowing recreational, senior, and intermediate golfers to sweep the ball cleanly from tight fairway lies or light rough—lifting long shots into a high, carrying trajectory more effortlessly than thin-profile long irons.

The iron is in good pre-owned vintage condition, with the satin steel face retaining crisp, functional scoring grooves for predictable ball traction. It displays normal cosmetic surface play scratches across the sand-brushed hitting zone, standard light scuffing along the sole channels, and typical minor bag wear on the rear cavity badges from regular use. It comes powered by a premium True Temper TT Lite stepped steel shaft for maximum torque stability and is complete with a black Pro Tour dimpled rubber wrap grip.