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Astro Tools 78311 11-Piece 3/8" Drive 1/2 Size Socket Set - 9.5-19.5mm for Undersized, Swollen or Damaged Hardware
- Ever grab a 13mm socket and it's too tight to fit, but 14mm feels lose? And it's not SAE?
- Not every bolt and nut on vehicles remain factory perfect to the millimeter over time and service life
- Use 0.5mm under sockets for rounded and damaged bolts and nuts, use 0.5mm over for swollen or corroded bolts and cap covered nuts
- For hand tools and impact wrenches, use a hammer to fit 1/2 size under sockets where needed
- Also works on SAE fasteners by stepping down the effective hex dimension on worn out hardware
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Astro Tools 78311 11-Piece 3/8" Drive 1/2 Size Socket Set - 9.5-19.5mm for Undersized, Swollen or Damaged Hardware
Astro Tools 78311 11-Piece 3/8" Drive 1/2 Size Socket Set - 9.5-19.5mm for Undersized, Swollen or Damaged Hardware
- Ever grab a 13mm socket and it's too tight to fit, but 14mm feels lose? And it's not SAE?
- Not every bolt and nut on vehicles remain factory perfect to the millimeter over time and service life
- Use 0.5mm under sockets for rounded and damaged bolts and nuts, use 0.5mm over for swollen or corroded bolts and cap covered nuts
- For hand tools and impact wrenches, use a hammer to fit 1/2 size under sockets where needed
- Also works on SAE fasteners by stepping down the effective hex dimension on worn out hardware
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From $355.48
Astro Tools 78311 11-Piece 3/8" Drive 1/2 Size Socket Set - 9.5-19.5mm for Undersized, Swollen or Damaged Hardware—
$355.48
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
- Ever grab a 13mm socket and it's too tight to fit, but 14mm feels lose? And it's not SAE?
- Not every bolt and nut on vehicles remain factory perfect to the millimeter over time and service life
- Use 0.5mm under sockets for rounded and damaged bolts and nuts, use 0.5mm over for swollen or corroded bolts and cap covered nuts
- For hand tools and impact wrenches, use a hammer to fit 1/2 size under sockets where needed
- Also works on SAE fasteners by stepping down the effective hex dimension on worn out hardware


















