Item Type: Saddle Spring ScrewsMaterial: Metal, BrassProduct Size: Approx. 3.3 x 2.17 x 0.8cm / 1.3 x 0.9 x 0.3in 1SPRING AND SCREW: These guitar bridge saddle codes feature springs and slot screws, easy to fasten and install, stable and reliable. 2METAL MATERIAL: These string saddle spring screws are made of excellent metal, which has high strength and good impact resistance. 3GLOSSY FINISH: With fine workmanship, these saddle spring screws have a glossy finish, will not hurt your hands or scratch other parts. 4GOOD STABILITY: Top load or string passing through the valve body, these saddle spring screws ensure a stable structure for the guitar. 53PCS IN 1 SET: Includes 3pcs string saddle spring screws, suitable for electric guitar bridge, can be directly installed and replaced.