34403 - utility knife with metal rail ARGENTAX TAP-O-MATIC No. 332 - MARTOR very stable knife equipped with an 18 mm wide snap-off blade and metal rail. You can adjust the blade extension to 17 different levels using the blade lock. Measurements (L x W x H): 153 x 20 x 37 mm. Weight: 67 g. Cutting depth: 16 mm. Basic material: Plastic.