No jobsite is too tough for Johnson's RockRipper® drywall square. Its blade is made of extruded aluminum for maximum durability, while its molded, high impact Structo-Cast® head will stand up to the worst jobsite abuse. This drywall square was also designed to keep your work moving smoothly and easily. It features a hand grip and board guide, while the perforation on its 24 in blade helps you make fast, efficient scoring. Finally, its screened, thermal-bonded black 1/8 and 1/16 in graduations are easy to read even in poorly-lit conditions.

• Perforated (1/16 in offset) 24 in blade accepts utility knife point for fast, efficient drywall scoring
• Molded high impact head with hand grip and board guide
• Screened, thermal-bonded black 1/8 and 1/16 in graduations
• Large, bold easy reading graduations
• Its high-impact Structo-Cast® head and extruded aluminum blade were designed to last and its perforated blade makes scoring drywall effortless

• Specification Sheet https://assets.unilogcorp.com/187/ITEM/DOC/Johnson_102296198_Specification_Sheet.pdf