Price: $ Price - Item: Standard 1/4" - 20 1/4" - 28 5/16" - 18 5/16" - 24 3/8" - 16 3/8" - 24 7/16" - 14 7/16" - 20 1/2" - 13 1/2" - 20 5/8" - 18 5/8" - 11 3/4" - 16 7/8" - 24 1"- 24 Metric 4mm 5mm 6mm 8mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm 22mm 24mm 25mm 28mm British 1/4 -26 5/16 - 26 3/8 - 26 7/16 - 26 1/2 -26 3/4 - 20 11/16 - 16