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Caulk Nozzle 45° Bead-Size Cutting Guide
This 100 x 30 x 36 mm block has a 45° knife ramp and five sizing holes for common caulk bead sizes: 1/8, 3/16, 1/4, 5/16 and 3/8 in (3.2–9.5 mm). Push a cartridge nozzle up through a 13 mm bore until it jams in the 3.5 mm sizing land, then slice flush along the ramp. You get a clean 45° opening at the bead size you picked, every time, with no guessing on a tapered tip.
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