ITEM NAME:4x Red E Guitar Tremolo Bridge Extension Springs For Bridge Description: High quality and testing is fine 4 Pcs of Set Red Tremolo Bridge Mounting Springs Use to tension a tremolo bridge Compatible for electric guitar, bass parts Material: Iron Size Chart: Approx. 65x9.7x7mm/2.56x0.38x0.28inch Package Includes: 4x Tremolo Springs Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item Due to manual measurement, there may be 1-2mm error in size SKU: ALU0017539378005375.Use to tension a tremolo bridge. 4 Pcs of Set Red Tremolo Bridge Mounting Springs. 4x Tremolo Springs. Compatible for electric guitar, bass parts. Material: Iron. Size Chart.