Size?4.8 x 1.3 inch / 123 x 34 mm (L x W), 0.75 inch (19 mm) diameter Pin. 1400 lbs load capacity. High Quality Materials?Heavy duty weld on barrel hinges are made of carbon steel Q235B, high strength, high load capacity and hardness for long service life. Smooth & Mute?Bullet hinges weld on steel with ball bearing can be rotated 360 degrees, low friction, more smoother and quieter. Application?Male to female weldable gate door hinges can widely for sliding door, metal door, swing gate, trailer ramp gates, garage door, windows or anywhere you need a hinge to weld on. Easy to use?Hinge pins are welded to either the outer frame or the gate/door and then inserted into the welded hinge pin to create custom, heavy-duty hinges.