📌 Product Overview

Full Metal Long Arm Stapler Heavy Duty 50 Sheets Saddle Stitch Binding Machine A3 Middle Seam Horse Riding Stapler Product Name: Long Arm Stapler Max Binding Capacity: Up to 50 Sheets Adjustable Binding Depth: 317mm Color: Matte Black Item Dimension: 397×52×70mm Compatible Staples: 24/6, 23/8  

⭐ Four Core Premium Advantages

1. Stable binding for 20–50 sheets of paper
2. All-metal body with durable baking paint finish
3. Adjustable binding depth fits A3 booklet middle seam binding
4. Rotatable staple plate with dual staple grooves  

✨ Main Product Features

● 📏 Adjustable middle-seam binding depth Paper feeding depth adjustable from 25mm to 317mm ● 🎯 Precise positioning for easy binding Combination of machine body scale + sliding positioning block for accurate alignment ● 🖤 Smooth painted metal housing Sleek surface with comfortable hand grip, delivering premium binding experience ● 📐 Built-in dual-scale ruler (cm & inch) Dual-unit depth measuring marks on the body for multi-scene use ● 🔄 360° rotatable staple plate Flexible to satisfy various document binding demands ● 🛡 3D plastic anti-slip base pad Stable anti-slip structure prevents sliding on office desks  

📝 Step-by-Step Operation Guide

1. Open the staple compartment and load matching staples
2. Adjust the sliding block to set your required paper feeding depth
3. Align your documents and place them at the target binding position
4. Press down the handle firmly to finish stapling