Stainless Steel Spring Ball Plunger Screw M4x12 Set 20pcs

1 Made of stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances. 2 Positioning ball is also called ball head plunger or spring plunger. A load device (SLDs) consisting of a shell, spring, ball or cylinder. 3 Widely used in some medical equipment, lubrication equipment, pneumatic tools and other products. 4 Engineers often use it in mold, fixture, assembly and other work. 5 With the help of a certain pressure of the spring to promote the movement of the ball, so that the smooth operation of the equipment.

What's in the box
1 x 20pcs set Stainless Steel Thread Hex Spring Ball Plunger Screw (M4x12)