StewMac Prop-Jack Tall – Large Acoustic Guitar Clamp Tool for Internal Repair Work – Extended Range Brace Jack with Interchangeable Notched and Magnetic Tips

StewMac Prop-Jack, TallMake professional acoustic guitar repairs with unmatched precision using the StewMac Prop-Jack. Designed by master luthier Doug Proper, this innovative internal clamp delivers the right pressure exactly where you need it—no more makeshift fixes or awkward hardware inside your instrument.EXTENDED HEIGHT FOR LARGER BODIES: Tall ranges from 4-1/16 to 5 inches for jumbos dreadnoughts and deep-body acousticsControlled pressure in tight spaces: The Prop-Jack is spring-loaded for effortless one-handed use. A knurled thumbwheel locks in precise tension, making it easy to handle internal clamping jobs in limited visibility zones.Versatile with interchangeable heads: The notched tip grips braces securely, while the magnetic tip aligns repairs from inside to out. Soft rubber feet keep it stable without marking delicate surfaces.Three size options: Choose from Mini, Short, or Tall sizes to fit any acoustic—from ukuleles to jumbo guitars. Whether you're supporting a brace, bridge plate, fingerboard extension, or patching cleats, the Prop-Jack is a must-have in every pro luthier’s toolkit.BUILT TO LAST A LIFETIME: All StewMac tools are backed by our Lifetime Promise for lifelong durability and our expert tech support is there when you need it most.

• TALL SIZE: Range 4-1/16" to 5" (103.17mm x 127.00mm) – Ideal for deep-bodied guitars
• PRO TOOL FOR INTERNAL REPAIRS: Securely props braces bridge plates and cleats deep inside large guitars
• MULTIFUNCTION HEADS: Notched tip secures braces magnetic tip aligns top cracks and repairs accurately
• ONE-HANDED CLAMPING: Spring-loaded design allows fast tool positioning and easy pressure locking with thumbwheel
• DURABLE AND RELIABLE: Designed with input from luthiers for heavy use in professional workshops