CZ29S, for 29 piece set. Fractional from 1/16" to 1/2" x 64ths. Decimal equivalents and US tap information. Each storage hole is precisely sized for accurate, quick tool selection. Fits in a 2" deep tool drawer. Corrosion-resistant, epoxy baked-on coating. Secure, snap-lock steel cover. Rugged, heavy gauge all–steel case.