For timber / Type & dimensions: carpenter handsaw, 400-450mm blade, lacquered, overall length 550mm +/-50mm. Blade thickness: 1mm +/- 0.05mm, protected against oxidation. Blade protection: Protective cardboard, teeth protection with hard, plastic cover. Seal type: laminated carbon steel, hardened and tempered. Number of teeth: 7-teeth per inch. Quality of make: Soft edges but no dents, cracks or broken teeth. Hardness Rockwell C: 45 to 50 HRC for the whole blade, 48 to 52 HRC at teeth level. Carbon content: 0.47% to 0.55%. Manganese content: 0.5% to 0.8%. Handle: Wooden dismountable handle, minimum 3 fixations, polished varnish hardwood, large 85x35mm opening for hand comfort when wearing gloves. Optional 45/90° square. Moisture minimum 10%, maximum 15%. Strength testing: With the blade inserted into a 10mm-wide slot to a depth equal to 1/3 the blade’s length, but not exceeding 150mm, a deflection of 90° is applied 25 times in each direction without breakage or permanent set to the blade.