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This set includes 13 individual SK16 English size collets.

• Total runout less than .0002 on these precise SK16 collets
• Made from Alloy spring steel and fully hardened.
• All critical collet surfaces are precision ground for accurate fit.
• Full set covers all sizes from .125 to .675 (1/8 - 5/8)
• The following inch sizes are included - 1/8, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 1/2, 9/16, 5/8