【High-Quality Tremolo Unit】 The GOTOH NS510TS-FE1 is a high-quality tremolo unit for electric guitars. Its precise design provides excellent sound quality and stability. 【Easy Installation】 The string spacing is 10.5mm, which fits most common guitars. A steel block is included, making installation easy. 【Durable Materials】 The metal construction makes it highly durable and allows for long-term use. It also contributes to improved sound quality. - Brand: GOTOH - Model Number: NS510TS-FE1 - Type: Electric Guitar Tremolo Unit - String Spacing: 10.5mm Thank you for viewing. I am selling this because I purchased the wrong size. This is a new, unused item, and it is a bridge with a 10.5mm string pitch steel block. Please check the images for detailed dimensions, etc.