The Juki MO-623 is a 1-Needle, 2/3 Thread Overlock machine with built-in Rolled Hemming, ideal for both beginners and experienced sewers.Key Features: 1-Needle, 2/3 Thread Overlock with built-in Rolled Hemming Color-Coded Threading Guides Adjustable Stitch Length (1-4 mm) Easy Dial Knife Adjustment Heavy Duty Knife System Automatic Rolled Hemming (no need to change foot or plate) Sewing LightMulti-Purpose Foot (with slotted tape guide for woven tape, elastic, sequins, ribbon) Sewing Width Gauge 1-Rotation Thread Tension Dials Standard equipment/function for Casual Wear, Evening Wear, Activewear, and Tailored Serging Stitch Variations: 3-Thread Narrow Overlock - 4mm 3-Thread Rolled Hem 3-Thread Overlock 2-Thread Rolled Hem 2-Thread Overcast Standard Specifications: Sewing Speed: Maximum 1,500 s.p.m. Number of Threads: 2/3 Threads Needle: Household Machine Size 11 or 14 Overlocking Width: Standard: 4 mm, Rolled Hem: 1.0-1.5 mm Stitch Length: 1-4 mm (Standard: 2.5 mm), Rolled Hem: 1.0-1.5 mm Differential Feed: 0.07-2.0 Ratio Tension: Industrial Type Dial / 1 Rotation Built-In Rolled Hemming: Right Needle / 2 or 3 Thread Flatlock: 2 or 3 Thread Universal Presser Foot: Tape, Ribbon, Narrow Elastic Application Presser Foot Lift: 5 mm Dimensions: 270 mm (W) x 260 mm (D) x 295 mm (H) Weight: 7.0 kg (15 lbs)