SPI Combination Square Blade, 18″ 4R – 13-456-9

18 Inch Long Blade, 4R Graduation Combination Square Blade
Baked Enamel Coated, 1/64, 1/32 1/16 and 1/8 Inch Graduation

Replacement Blades:

• Made to federal specifications
• Fully hardened and tempered and satin chrome finish
• Interchangeable with all popular makes of combination squares

Graduations:

• 4R: 8ths, 16ths, 32nds, 64ths
• 16R: 32nds, 64ths, 50ths, 100ths
• Inch/Metric: 1mm, 64ths, 32nds, 1/2mm
• Metric: 1mm, 1/2mm, 1mm, 1/2mm

Specifications:

For use with SPI Combination Square Sets