The Lincoln Grease Fitting Zerk is designed with a 1/4-28 SAE-LT thread and a 0.17-inch shank, constructed from durable materials with a zinc coating for corrosion resistance. This fitting is ideal for delivering grease to bearings and other moving parts, ensuring smooth operation and reducing wear. Its compact design allows for easy installation in tight spaces, making it a versatile choice for automotive and industrial applications. The Zerk fitting is compatible with standard grease guns, facilitating efficient lubrication.