Titleist Brand Ambassador Ben Curtis arrives at the Aronimink range with his new Prototype AP1 irons.

Here's a closer look at the new Prototype AP1s.

Titleist Tour Rep Chris Tuten makes a new Prototype AP2 delivery.

Titleist Brand Ambassador Michael Sim checks in with the team at the Titleist Tour Van.

Brand-new, bubble-wrapped Prototype CB irons ready for assembly Inside the Titleist Tour Van.

The Titleist Golf Club R&D team gathers information during new Prototyope AP2 testing with Titleist Brand Ambassador Jason Dufner.

A set of new Prototype CB irons awaits its owner in the TTV.

Here's the view from the top.

Many players are having their previous iron sets shipped home.

Rick Nelson, Titleist's director of wedge development, completed the delivery.