Package list: 6 * Guitar Saddle Specification: Material: Copper-zinc Alloy Optional Color: Red Copper, Gold, Silver, Black Saddle Screw Length: 10mm / 0.4in Tail Screw Length: 17mm / 0.7in Each Size: Approx. 20 * 10 * 5mm / 0.8 * 0.4 * 0.2in Adjustable Saddle Height: Approx. 5-14mm / 0.2-0.6in Weight: Approx. 47g / 1.7oz IMPROVE TONE AND SUSTAIN: The guitar roller bridge with 6pcs in one set, as electric guitar replacement parts, to meet your needs better. The rollers help prevent string breakage, improve tone and sustain and keep your guitar in tune.HEIGHT ADJUSTABLE : The height of the guitar bridge saddle to be adjusted from 5-14mm/ 0.2-0.6in. The electric guitar saddle tail screw can adjust the front and back distance of the saddle.DIY AND REPLACEMENT: Great saddle bridge with roller, used for DIY guitar, suitable for most electric guitar. Replacement metal saddles for Strat tremolo or fixed bridges.PREMIUM MATERIAL: This guitar saddle bridge set is made of high quality copper-zinc alloy, sturdy and durable, ensure a long time use.KINDLY NOTED: Please be sure to verify the dimensions to confirm these saddles would fit your bridge before you order them.