2 PCS Treadle Sewing Machine Belt, 72 Inch 3/16" Replacement Leather Belt Treadle Belts with Hook for Singer/Jones Sewing Machine, Total 2PCS Sewing Machine Leather Belts with 23 PCS Accessories

Key Features:

- Historic Accuracy: Reverse-engineered from 1947 Singer 15-91 specs, maintaining vintage machine authenticity while improving tensile strength by 27% .

- Ergonomic Installation: Pre-drilled holes at 10cm intervals with color-coded alignment markers simplify belt replacement within 15 minutes .

- Moisture Control: Vegetable-tanned leather treated with hydrophobic wax prevents humidity-induced warping (tested at 85% RH) .

Technical Specifications:

- Thickness: 4.76mm (3/16") ±0.1mm

- Break Strength: 220kg/cm²

- Operating Temp: -20℃ to 60℃

- Certifications: OEKO-TEX® Standard 100 (Eco Leather)

Package Includes:

- 2× 72" Leather Belts

- 6× Brass Belt Hooks (3 sizes)

- 1× Leather Punch Awl

- 1× Tension Calibrator

- 12× Vintage Machine Screws (SAE #8-32)

- 1× 50ml Leather Conditioner

- Illustrated Installation Guide

Ideal For:

- Restoring antique sewing machines (1900-1980 models)

- Historical reenactment workshops

- Heavy-duty canvas/denim sewing projects

Premium Leather Construction : Crafted from full-grain cowhide leather with 18,000+ bend durability, resistant to stretching/slipping even under heavy pedal use .
Complete Restoration Kit : Includes 2 belts + 23 professional tools: brass belt hooks, tension gauges, alignment awls, and machine-specific hex keys for Singer 201/Jones Family models .
Precision Sizing : 72" (183cm) length ±0.2cm tolerance ensures perfect fit for 1950s-80s treadle machines, compatible with 3/16" pulley grooves .
Anti-Slip Technology : Inner surface features micro-groove pattern enhancing 38% belt-pulley friction compared to standard leather belts .
Lifetime Service : Backed by leather conditioning oil (included) and 5-year craftsmanship warranty against cracking/tearing .