Product Specifications: [Core Specifications] Material: AAA-grade spruce pressure post + adjustment screw Dimensions: Pressure post 3.2" × 1.8" × 0.8" | Screw diameter 0.86in Compatible bridges: 1.5"-2.2" from saddle to endpin (covers 90% of acoustic guitars) Accessories: 8.66" wooden stick, one hexagonal wrench Load-bearing test: Continuous tension ≥ 200 lbs (safety standard for 12-string guitars) [Technical Highlights] Acoustically engineered structure The spruce pressure post features a 45° bevel cut to align with the soundboard's growth rings, ensuring efficient sound wave transmission. The screw has a fine-tuning accuracy of 0.5mm/turn for precise control of downward pressure. [Non-Destructive Installation System] Instructions for drilling a hole 2mm behind the bridge pin hole (only 3mm diameter required) to avoid damaging the internal bracing allow for professional-grade installation in 15 minutes. [Dynamic Pressure Balance] The contact surface adapts to the bridge's curvature, automatically fine-tuning pressure distribution with temperature and humidity changes, eliminating the risk of panel deformation caused by localized stress. [Professional Maintenance Kit] Includes a bridge pin extractor and torque-limiting screwdriver, eliminating the damage to the guitar caused by traditional hammer-type installation, making it safe for even beginners. [Verified in Multiple Scenarios] Tested in temperatures ranging from -10°C to 50°C (simulating extreme touring conditions), the spruce wood exhibits no cracking and the brass exhibits no oxidation, ensuring stability for both stage and studio use.