Fangrui Product Details Set-up Blocks Set. This Is A Set Of 15 Setup Blocks With A Storage Case. The 15 Gauge Blocks Measure In Height From 1/16inch To 1-31/32inch, In 1/32inch Increments (accuracy 0.001inch), Respectively 1/16inch, 3/32inch, 1/8 Inch,5/32inch ,3/16inch ,7/32inch ,1/4inch ,5/16inch ,3/8inch ,7/16inch, 15/32inch, 1/2inch, 23/32inch, 3/4inch, 1x2x3inch. They Are Stackable For More Measurement Needs. A Great Value! High Quality! All These Setup Blocks Are Made Out Of Solid Aluminum Alloy With Anodization Treatment, Which Makes Them Anti-rust And Durable. Laser Etched Scales In White Print Are Accurate And Easy To Read. A Must-have Woodworking Tool For Those Who Wants Precision. Measure Twice, Cut Once! High Efficiency! These Setup Blocks Are Very Useful Woodworking Tools If You Work On A Table Saw And/or A Router Table. They Do Quick And Accurate Measurement On Blade Height, Cut Width, Router Bits Height, Bandsaw Width, Inside Measurement, And Other General Measurement In Woodworking And Even Beyond That. You Wou Crafted With Attention To Detail