Callaway Apex Pro 21 Irons / 6-PW / Project X Stiff Flex
Callaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff Flex
Callaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff FlexCallaway Apex Pro 21 Irons / 6-PW / Project X Stiff Flex
Pre-Owned

Callaway Apex Pro 21 Irons / 6-PW / Project X Stiff Flex

Callaway Golf Authorised Online Retailer
Quick Find Code: U419266 Pre-Owned Condition: Very Good
£303.99 RRP £1099.00
Pre-Owned Condition Very Good

This is a pre-owned club, graded on arrival. Each score is how much wear that part shows, where 10 is as-new.

Unique item, only 1 available.

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Returns & Warranty

Pre-owned clubs are covered by our 30-day returns policy, not the 60 days that applies to new goods: if it's not right, send it back in the condition you received it for a refund. Each club is a one-off, so we can't offer a like-for-like exchange, but you're welcome to order anything else.

Condition is exactly as described and photographed above. A manufacturer's warranty does not transfer to a pre-owned club, so we cover it ourselves: 6 months from the date of dispatch against genuine failure, which does not include the wear shown in the grading above. If you have any questions about the condition or specification, please contact us before you buy. Full returns policy.

The Callaway Apex Pro Irons are designed to provide a blend of advanced performance and classic aesthetics, targeting skilled golfers who prioritize control, precision, and feel. These irons feature a forged construction, crafted from 1020 carbon steel, which delivers a soft, responsive feel and exceptional feedback, making them ideal for players who value a premium touch and precise shot-making.
The Apex Pro Irons incorporate a compact, tour-inspired head design with a thin topline and minimal offset. This traditional look and feel are tailored for advanced players who seek the ability to shape shots and control trajectory. Despite their more compact design, these irons offer a degree of forgiveness through Callaway’s advanced weighting technology, which enhances the center of gravity (CG) and increases the Moment of Inertia (MOI). This helps maintain stability and consistency on off-center hits.
The irons also feature a unique Progressive CG technology, which optimizes the CG position across the set to suit different club lengths and lofts, contributing to improved distance control and accuracy. Overall, the Callaway Apex Pro Irons are well-suited for low-handicap golfers who demand a high level of control and feel, combined with just enough forgiveness to enhance their performance on the course.

Specification

DexterityRight Hand
BrandCallaway
ModelApex Pro 21
Set make up6-PW
Shaft FlexStiff
Shaft ModelProject X
Shaft MaterialSteel
LengthStandard
Grip detailsGolf Pride Tour Velvet
Year2021
Iron Set Count5
Shaft FlexStiff
Condition Guide

Every pre-owned club is graded out of 10 on its Head, Shaft and Grip, which combine into an overall condition grade. Grips scoring below 6/10 are replaced before sale.

  • 10/10 – Unused, often still boxed.
  • 9/10 – Mint; little to no sign of use.
  • 8/10 – Very good; used only a handful of times, faint marks.
  • 7/10 – Good; clear evidence of play but no damage.
  • 6/10 – Fair; honest cosmetic wear from normal play (our most common grade).
  • 5/10 – Well used; heavier play marks, still fully playable.