StewMac Prop-Jack, Short – Mid-Size Acoustic Guitar Repair Clamp Tool for Brace and Crack Support – Adjustable Pressure Jack with Magnetic and Notched Tips

StewMac Prop-Jack, ShortMake 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.Controlled 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.SHORT SIZE: Range 3-1/2" to 4-3/8" (88.90mm x 101.60mm) – Fits standard acoustic bodiesThree 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.

• SHORT SIZE: Range 3-1/2" to 4-3/8" (88.90mm x 101.60mm) – Fits standard acoustic bodies
• 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