Proto Single 3/8" SAE Open End Wrench, Heavy-Duty Toolbox Staple, Ideal for Garage and Job Site Use, Made for Heavy Shop Use, Pro Mechanic Wrench for Auto Repair and Shop Work

Proto Single 3/8" SAE Open End Wrench for Pro Shop Use
✔️ 1 open end wrench, 3/8" size, built for real work, pro-grade build

This Proto single open end wrench slides onto nuts from the side, which is handy on fittings and spots with little room. It's a handy pick for auto shops, hydraulic work, and home garages.

✅ Pack size: 1 open end wrench
✅ Brand: Proto
✅ Size: 3/8"
✅ Measurement system: SAE
✅ Mfr part number: J3134

💡 When should you use an open end wrench?
Open end wrenches are best when you can't get around the nut.

• They slide onto nuts from the side, great for lines and fittings
• Double open ends give you two sizes in one tool
• For tight bolts, a box end or flare nut wrench grips better