About This Size: 12'', 4Pcs/Set, 4R. Used for set-ups. Layouts, checking heights, depths, angle set-ups., etc. Blades are fully hardened and tempered square head has level & scriber point Made of Premium Steel. In contrast to iron steel, it provides significantly better rigidity, reliability, and quality. Easy-to-read satin chrome finished blades. Micro-fine blade graduations 4R Graduation: 8ths, 16ths, 32nds, 64ths Bulk Pack Value: Includes 5 sets of the 12'' 4R Combination Square Ruler Set for professional workshops and educational settings. Durable Construction: Blades are fully hardened and tempered, ensuring long-lasting precision and wear resistance. Versatile Measurement Tools: Each set features a square head with a built-in level and scriber point for diverse layout tasks. Precision Graduations: Micro-fine 4R graduations (8ths, 16ths, 32nds, 64ths) on satin chrome blades for clear, accurate readings. Multi-Application Design: Ideal for setup, layout, checking heights, depths, and angles in machining, fabricating, and engineering tasks. Overview Material : Stainless Steel Brand : Accusize Industrial Tools Color : Blue Style : Modern" or "Classic Product Dimensions : 11.81"L x 12"W