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Golf Iron Sets

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Used Callaway Big Bertha X-12 3i-pw Stiff Flex Graphite Shaft Iron Sets
pias11677
Used Callaway Big Bertha X-12 3i-pw Stiff Flex Graphite Shaft Iron Sets
$170
Callaway Big Bertha Fusion Set 4-5 Iron Regular Graphite Shaft
blakesgolfshop
Callaway Big Bertha Fusion Set 4-5 Iron Regular Graphite Shaft
$120
Used Men's Callaway Big Bertha Right Handed Iron Set Stiff Flex 7 Pieces Graphite Shaft
RePlayGear101
Used Men's Callaway Big Bertha Right Handed Iron Set Stiff Flex 7 Pieces Graphite Shaft
$215
Men's Right Handed Stiff Flex Graphite Shaft Big Bertha OS Iron Set
piasdeptford
Men's Right Handed Stiff Flex Graphite Shaft Big Bertha OS Iron Set
$450
Callaway 1996 Big Bertha Irons Set 4-PW (No 5) Stiff Graphite Shafts
blakesgolfshop
Callaway 1996 Big Bertha Irons Set 4-PW (No 5) Stiff Graphite Shafts
$160
Used Callaway Big Bertha 1996 6i-pw Regular Flex Graphite Shaft Iron Sets
PIASDurham
Used Callaway Big Bertha 1996 6i-pw Regular Flex Graphite Shaft Iron Sets
$180
Used 2012 Callaway Right Handed Regular Flex Graphite Shaft Big Bertha Iron Set
BDCdawg
Used 2012 Callaway Right Handed Regular Flex Graphite Shaft Big Bertha Iron Set
$102
Used Callaway Callaway Great Big Bertha Tungsten Titan 3i-pw Stiff Flex Steel Shaft Iron Sets
PIA_Valdosta
Used Callaway Callaway Great Big Bertha Tungsten Titan 3i-pw Stiff Flex Steel Shaft Iron Sets
$330
Callaway Big Bertha 1994 Irons 2-PW Dynamic Stiff Flex Graphite Golf Club Set
SwingPointGolf
Callaway Big Bertha 1994 Irons 2-PW Dynamic Stiff Flex Graphite Golf Club Set
$180
Used Callaway Big Bertha Os 4i-gw Aw Regular Flex Graphite Shaft Iron Sets
pias11677
Used Callaway Big Bertha Os 4i-gw Aw Regular Flex Graphite Shaft Iron Sets
$280
Used Callaway Big Bertha Regular Flex Steel Shaft Iron Sets
PIA_Valdosta
Used Callaway Big Bertha Regular Flex Steel Shaft Iron Sets
$385
Used Men's Callaway Big Bertha B21 Iron Set Right Handed Regular Flex Graphite Shaft
Redi
Used Men's Callaway Big Bertha B21 Iron Set Right Handed Regular Flex Graphite Shaft
$660
Used Men's Callaway Big Bertha Fusion Right Handed Iron Set Regular Flex Graphite Shaft
airways
Used Men's Callaway Big Bertha Fusion Right Handed Iron Set Regular Flex Graphite Shaft
$220
Retail price: $1,200
Callaway Big Bertha B21 Iron Set 6-9+AW RCH 65 Senior Graphite Mens RH
stickhawk
Callaway Big Bertha B21 Iron Set 6-9+AW RCH 65 Senior Graphite Mens RH
$414$48715%
15% OFF
CALLAWAY BIG BERTHA GOLD IRON SET
FLGolfClubs
CALLAWAY BIG BERTHA GOLD IRON SET
$279
Callaway Big Bertha 2008 4-PW Iron Set Factory Big Bertha Steel Uniflex
clubfindersgolf
Callaway Big Bertha 2008 4-PW Iron Set Factory Big Bertha Steel Uniflex
$300
Callaway Big Bertha 2008 Iron Set 3-9 Uniflex Steel Mens RH
stickhawk
Callaway Big Bertha 2008 Iron Set 3-9 Uniflex Steel Mens RH
$255$30015%
15% OFF
Used Men's Callaway Big Bertha Iron Set Right Handed Steel Shaft
QuickChange
Used Men's Callaway Big Bertha Iron Set Right Handed Steel Shaft
$160
Retail price: $975
Used Men's Callaway Big Bertha Right Handed Iron Set Regular Flex 8 Pieces Graphite Shaft
RePlayGear101
Used Men's Callaway Big Bertha Right Handed Iron Set Regular Flex 8 Pieces Graphite Shaft
$215
Callaway Big Bertha 2004 Irons Set 5-6 (No 7) 8-9 Iron Regular Graphite Shafts
blakesgolfshop
Callaway Big Bertha 2004 Irons Set 5-6 (No 7) 8-9 Iron Regular Graphite Shafts
$99
Men's 1998 Callaway Right Handed Stiff Flex Steel Shaft (Used) Big Bertha X-12 Iron Set
CChase507
Men's 1998 Callaway Right Handed Stiff Flex Steel Shaft (Used) Big Bertha X-12 Iron Set
$150
Retail price: $900
Callaway Big Bertha 2002 Iron Set 4-PW Big Bertha Regular Steel Mens RH
stickhawk
Callaway Big Bertha 2002 Iron Set 4-PW Big Bertha Regular Steel Mens RH
$160$18815%
15% OFF
Callaway Great Big Bertha 23 Iron Set 6-PW+GW Helium 60I F3 60g Regular RH
stickhawk
Callaway Great Big Bertha 23 Iron Set 6-PW+GW Helium 60I F3 60g Regular RH
$697$82015%
15% OFF
Callaway Great Big Bertha Iron Set - 6-PW - Senior Flex Graphite - NEW
HouseOfGolf
Callaway Great Big Bertha Iron Set - 6-PW - Senior Flex Graphite - NEW
$640
Callaway Big Bertha (2006) Iron Set 4-9, PW Right Handed Uniflex Steel Shafts
Cannonsclubs
Callaway Big Bertha (2006) Iron Set 4-9, PW Right Handed Uniflex Steel Shafts
$300
Men's 2008 Callaway Right Handed Uniflex Steel Shaft (Used) Big Bertha Iron Set
CChase507
Men's 2008 Callaway Right Handed Uniflex Steel Shaft (Used) Big Bertha Iron Set
$245
Retail price: $900
Callaway Big Bertha (2006) Iron Set 4-9, PW Right Handed Light Flex Shafts
Cannonsclubs
Callaway Big Bertha (2006) Iron Set 4-9, PW Right Handed Light Flex Shafts
$279
Callaway Big Bertha 2002 Iron Set 4-9 (No 7) Uniflex Steel Mens RH
stickhawk
Callaway Big Bertha 2002 Iron Set 4-9 (No 7) Uniflex Steel Mens RH
$114$13415%
15% OFF
Callaway Big Bertha Fusion Irons Set 5-PW-SW-LW Regular Graphite Shafts
blakesgolfshop
Callaway Big Bertha Fusion Irons Set 5-PW-SW-LW Regular Graphite Shafts
$240
Callaway Great Big Bertha Iron Set - 6-PW, AW - Senior Flex Graphite - NEW
HouseOfGolf
Callaway Great Big Bertha Iron Set - 6-PW, AW - Senior Flex Graphite - NEW
$700
Callaway Big Bertha 2002 Iron Set 4-10 RCH Firm Graphite Shafts *Good*
pipsisports
Callaway Big Bertha 2002 Iron Set 4-10 RCH Firm Graphite Shafts *Good*
$117
Callaway Big Bertha X-12 Iron Set 3-PW RCH 90 Stiff Graphite 5i 38" RH New Grips
BayGolfExchange
Callaway Big Bertha X-12 Iron Set 3-PW RCH 90 Stiff Graphite 5i 38" RH New Grips
$200

Flex refers to how much the shaft of the golf club bends during the swing. There are generally five ratings for flex: extra stiff, stiff, regular, senior, and ladies. Your optimal flex will vary based on your technique and driver distance.

As shown here:

Flex Driver Distance
Extra stiff Over 275 yards
Stiff 240-275 yards
Regular 200-240 yards
Senior 180-200 yards
Ladies Under 180 yards

Iron sets typically include seven or eight clubs consisting of 4, 5, 6, 7, 8 and 9 irons in addiiton to a pitching wedge and sometimes a gap wedge.