Sub 70 · Irons
639 CB Irons
★ 8.7 · Irons
workabilityfeelvalueblade
SPECS
HANDICAP RANGE
0–8 HCP
SWING SPEED
90–120 mph
LAUNCH ANGLE
MID
STOCK SHAFT
True Temper Dynamic Gold 105 S300
RATING
★ 8.7 / 10
MSRP
$799
ABOUT
The 639 CB is Sub 70's pure cavity-back offering — a forged 1020 carbon steel iron with a compact head profile and minimal offset. A high-performance iron for low-handicap players who want tour-level quality at a fraction of major-brand pricing.
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