STANDARD COMPATIBILITY: This plunger is designed in a universal size and fits a variety of devices and parts, making it suitable for equipment, furniture assembly, vehicle repair, and creative activities STRONG METAL: This knob plunger is made of solid metal, which shows excellent resistance to rust and abrasion, making it ideal for industrial and mechanical jobs that require long term use SECURE LOCKING: Special lock design allows for quick and easy adjustment as needed while ensuring consistent functionality and accidental release MULTI-PURPOSE: This metal knob plunger is ideal for workers and hobbyists, and works effectively for technical, electronic, and home store jobs that require a secure hold SMOOTH SPRING ASSISTANT MOTION: The spring loaded pin and return plunger provides effortless movement and automatic repositioning for increased comfort during use, Manufacturer: LEMEIGUO