34415 - safety knife SECUNORM PROFI25 No. 120001 - MARTOR knife. Blade extension is 25 mm. Has automatic blade retraction. For right and left handers - turn the blade 180°. Blade has two sharp edges - only turn over the blade. Measurements (L x W x H): 143 x 17 x 31. Weight: 82 g. Cutting depth: 21 mm. Basic material: Aluminium.