Both of the screws and springs are made of stainless steel, stable, durable and corrosion resistant. 6 pieces screws and 6 pieces springs.
Musiclily Pro 6 Sets M3x16mm Stainless Steel Guitar Bridge Saddle Screw Spring
Musiclily Pro 6 Sets Black M3x20mm Saddle Screws Springs For Guitar Bass Bridge
Musiclily Pro 10 Sets 3/8" Hex Nut Flat Washer Lock Washer For US Thread CTS Pot
Musiclily Ultra 6 Sets Gold UNC#6-32x3/4" Stainless Steel Pickup Screws Springs
Musiclily Pro Black 6 Inline Sealed Locking Guitar Tuning Pegs Machine Heads Set
Musiclily Pro Chrome 6 Inline Sealed Locking Guitar Tuning Pegs Machine Head Set