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The PROTO JSCRM15 is a 15 mm combination wrench built for professional tradespeople who need a reliable ratcheting open-end and box-end tool in tight spaces. The 12-point box end engages fasteners with minimal swing arc, while the 15-degree offset head angle improves knuckle clearance in confined work areas. The wrench is machined from steel with a corrosion-resistant chrome finish, measures 7-7/8 inches overall, and weighs 0.27 pounds. It meets ASME standards and carries a lifetime warranty. A tether-capable design makes it suitable for elevated work or drop-restricted environments where tool retention is required by site safety rules.
This wrench is suited for mechanical, HVAC, electrical, and plumbing trades working on fasteners in the 15 mm size range. The ratcheting box end allows continuous fastener rotation without repositioning, making it a practical choice on equipment with limited access — such as compressor mounting hardware, pipe flanges, panel enclosures, and conduit fittings. The straight handle and 15-degree offset head are standard geometry for general-purpose service work in both residential and light commercial settings.
Designed as an OEM-style service wrench for 15 mm fasteners across a wide range of mechanical, HVAC, plumbing, and electrical applications where a combination wrench with a ratcheting box end is specified.
Use by qualified tradespeople following applicable site safety and tool-use protocols. De-energize electrical systems and relieve system pressure before using hand tools on live equipment. When working at height or over open equipment, attach the tether loop to an approved tool-lanyard anchor point per site fall-protection requirements. Do not use the wrench as a striking tool or apply extension bars unless the tool is rated for such use.
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